{"id":2123,"date":"2026-05-25T11:21:10","date_gmt":"2026-05-25T05:51:10","guid":{"rendered":"https:\/\/mymockmate.com\/notes\/?p=2123"},"modified":"2026-06-26T17:34:39","modified_gmt":"2026-06-26T12:04:39","slug":"ncert-class-9-maths-exercise-2-1-solutions-introduction-to-linear-polynomials","status":"publish","type":"post","link":"https:\/\/mymockmate.com\/notes\/ncert-class-9-maths-exercise-2-1-solutions-introduction-to-linear-polynomials\/","title":{"rendered":"NCERT Class 9 Maths Exercise 2.1 Solutions \u2013 Introduction to Linear Polynomials"},"content":{"rendered":"<div class=\"mymoc-top mymoc-entity-placement\" id=\"mymoc-3690818886\"><div id=\"mymoc-1157249766\"><a href=\"https:\/\/amzn.to\/4v5gV6P\" aria-label=\"calculators\"><img src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/calculators.png\" alt=\"\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/calculators.png 1302w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/calculators-300x99.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/calculators-1024x338.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/calculators-768x254.png 768w\" sizes=\"(max-width: 1302px) 100vw, 1302px\" width=\"1302\" height=\"430\"><\/a><\/div><\/div><div class=\"pdfprnt-buttons pdfprnt-buttons-post pdfprnt-top-bottom-right\"><a href=\"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2123?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Print Content\"><span class=\"pdfprnt-button-title pdfprnt-button-print-title\">Print<\/span><\/a> <span class=\"pdfprnt-count-generation\">18<\/span><\/div>\n<h2 class=\"wp-block-heading\">Short Intro<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In this article, we provide complete step-by-step solutions for <strong>Exercise 2.1<\/strong> from the chapter <strong>Introduction to Linear Polynomials<\/strong> for Class 9 Mathematics. These solutions will help students understand concepts like degree of polynomial, coefficients, variables, and constant terms in an easy way.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quick Information Box<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Topic<\/th><th>Details<\/th><\/tr><\/thead><tbody><tr><td>Chapter Name<\/td><td>Introduction to Linear Polynomials<\/td><\/tr><tr><td>Exercise<\/td><td>Exercise 2.1<\/td><\/tr><tr><td>Class<\/td><td>Grade 9<\/td><\/tr><tr><td>Main Concepts<\/td><td>Polynomial, Degree, Coefficient, Constant<\/td><\/tr><tr><td>Difficulty Level<\/td><td>Easy<\/td><\/tr><tr><td>Best For<\/td><td>School Exams, Olympiads, Foundation Preparation<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Concepts Used (Topics Covered)<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Polynomial<\/li>\n\n\n\n<li>Degree of Polynomial<\/li>\n\n\n\n<li>Linear Polynomial<\/li>\n\n\n\n<li>Quadratic Polynomial<\/li>\n\n\n\n<li>Cubic Polynomial<\/li>\n\n\n\n<li>Coefficients<\/li>\n\n\n\n<li>Constant Term<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Important Formulas<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Polynomial Degree Rule<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The highest power of the variable in a polynomial is called its degree.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Examples<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Linear Polynomial<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>3<\/mn><mi>x<\/mi><mo>+<\/mo><mn>7<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">3x+7<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Degree = 1<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Quadratic Polynomial<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msup><mi>x<\/mi><mn>2<\/mn><\/msup><mo>+<\/mo><mn>5<\/mn><mi>x<\/mi><mo>+<\/mo><mn>1<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">x^2+5x+1<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Degree = 2<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cubic Polynomial<\/h3>\n\n\n\n<div class=\"internal-linking-related-contents\"><a href=\"https:\/\/mymockmate.com\/notes\/ncert-class-10-maths-real-number-exercise-1-2-solutions-mymockmate\/\" class=\"template-2\"><span class=\"cta\">Related Topic to Read more<\/span><span class=\"postTitle\">NCERT Class 10 Maths Real Number Exercise 1.2 Solutions |  MyMockMate<\/span><\/a><\/div><p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>5<\/mn><msup><mi>y<\/mi><mn>3<\/mn><\/msup><mo>+<\/mo><msup><mi>y<\/mi><mn>2<\/mn><\/msup><mo>+<\/mo><mn>2<\/mn><mi>y<\/mi><mo>&minus;<\/mo><mn>1<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">5y^3+y^2+2y-1<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Degree = 3<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Exercise 2.1 &ndash; Step-by-Step Solutions<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Question 1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Find the degrees of the following polynomials.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(i) <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>2<\/mn><msup><mi>x<\/mi><mn>2<\/mn><\/msup><mo>&minus;<\/mo><mn>5<\/mn><mi>x<\/mi><mo>+<\/mo><mn>3<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">2x^2 &ndash; 5x + 3<\/annotation><\/semantics><\/math><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">Solution<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"859\" height=\"1024\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-757-859x1024.png\" alt=\"\" class=\"wp-image-5480\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-757-859x1024.png 859w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-757-252x300.png 252w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-757-768x915.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-757.png 1149w\" sizes=\"(max-width: 859px) 100vw, 859px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h3 class=\"wp-block-heading\">(ii) <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msup><mi>y<\/mi><mn>3<\/mn><\/msup><mo>+<\/mo><mn>2<\/mn><mi>y<\/mi><mo>&minus;<\/mo><mn>1<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">y^3 + 2y &ndash; 1<\/annotation><\/semantics><\/math><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">Solution<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"859\" height=\"1024\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-751-859x1024.png\" alt=\"\" class=\"wp-image-5466\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-751-859x1024.png 859w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-751-252x300.png 252w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-751-768x915.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-751.png 1149w\" sizes=\"(max-width: 859px) 100vw, 859px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h3 class=\"wp-block-heading\">(iii) <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mo>&minus;<\/mo><mn>9<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">-9<\/annotation><\/semantics><\/math><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">Solution<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"859\" height=\"1024\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-752-859x1024.png\" alt=\"\" class=\"wp-image-5469\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-752-859x1024.png 859w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-752-252x300.png 252w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-752-768x915.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-752.png 1149w\" sizes=\"(max-width: 859px) 100vw, 859px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h3 class=\"wp-block-heading\">(iv) <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>4<\/mn><mi>z<\/mi><mo>&minus;<\/mo><mn>3<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">4z &ndash; 3<\/annotation><\/semantics><\/math><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">Solution<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"870\" height=\"1024\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-753-870x1024.png\" alt=\"\" class=\"wp-image-5471\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-753-870x1024.png 870w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-753-255x300.png 255w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-753-768x904.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-753.png 1156w\" sizes=\"(max-width: 870px) 100vw, 870px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 2<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Write polynomials of degrees 1, 2 and 3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Solution<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"866\" height=\"1024\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-754-866x1024.png\" alt=\"\" class=\"wp-image-5474\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-754-866x1024.png 866w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-754-254x300.png 254w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-754-768x909.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-754.png 1153w\" sizes=\"(max-width: 866px) 100vw, 866px\"><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">Question 3<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">What are the coefficients of <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msup><mi>x<\/mi><mn>2<\/mn><\/msup><\/mrow><annotation encoding=\"application\/x-tex\">x^2<\/annotation><\/semantics><\/math> and <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msup><mi>x<\/mi><mn>3<\/mn><\/msup><\/mrow><annotation encoding=\"application\/x-tex\">x^3<\/annotation><\/semantics><\/math> in the polynomial<br><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msup><mi>x<\/mi><mn>4<\/mn><\/msup><mo>&minus;<\/mo><mn>3<\/mn><msup><mi>x<\/mi><mn>3<\/mn><\/msup><mo>+<\/mo><mn>6<\/mn><msup><mi>x<\/mi><mn>2<\/mn><\/msup><mo>&minus;<\/mo><mn>2<\/mn><mi>x<\/mi><mo>+<\/mo><mn>7<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">x^4 &ndash; 3x^3 + 6x^2 &ndash; 2x + 7<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Solution<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"912\" height=\"1024\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-755-912x1024.png\" alt=\"\" class=\"wp-image-5477\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-755-912x1024.png 912w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-755-267x300.png 267w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-755-768x863.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-755.png 1183w\" sizes=\"(max-width: 912px) 100vw, 912px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 4<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">What is the coefficient of z in the polynomial<br><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>4<\/mn><msup><mi>z<\/mi><mn>3<\/mn><\/msup><mo>+<\/mo><mn>5<\/mn><msup><mi>z<\/mi><mn>2<\/mn><\/msup><mo>&minus;<\/mo><mn>11<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">4z^3 + 5z^2 &ndash; 11<\/annotation><\/semantics><\/math> <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Solution<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"859\" height=\"1024\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-756-859x1024.png\" alt=\"\" class=\"wp-image-5478\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-756-859x1024.png 859w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-756-252x300.png 252w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-756-768x915.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-756.png 1149w\" sizes=\"(max-width: 859px) 100vw, 859px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 5<\/h1>\n\n\n\n<div class=\"internal-linking-related-contents\"><a href=\"https:\/\/mymockmate.com\/notes\/class-10-maths-exercise-2-1-solutions-polynomials-ncert-solutions\/\" class=\"template-2\"><span class=\"cta\">Related Topic to Read more<\/span><span class=\"postTitle\">NCERT Class 10 Maths Exercise 2.1 Solutions | Polynomials<\/span><\/a><\/div><p class=\"wp-block-paragraph\">What is the constant term of the polynomial<br><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>9<\/mn><msup><mi>x<\/mi><mn>3<\/mn><\/msup><mo>+<\/mo><mn>5<\/mn><msup><mi>x<\/mi><mn>2<\/mn><\/msup><mo>&minus;<\/mo><mn>8<\/mn><mi>x<\/mi><mo>&minus;<\/mo><mn>10<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">9x^3 + 5x^2 &ndash; 8x -10<\/annotation><\/semantics><\/math> <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Solution<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"859\" height=\"1024\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-758-859x1024.png\" alt=\"\" class=\"wp-image-5483\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-758-859x1024.png 859w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-758-252x300.png 252w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-758-768x915.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-758.png 1149w\" sizes=\"(max-width: 859px) 100vw, 859px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Common Mistakes Students Make<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Confusing coefficient with degree.<\/li>\n\n\n\n<li>Forgetting that constant polynomials have degree 0.<\/li>\n\n\n\n<li>Writing coefficient of missing term incorrectly.<\/li>\n\n\n\n<li>Taking lowest power instead of highest power for degree.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Exam Tips<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">&#10004; Degree = Highest power only<br>&#10004; Constant term has no variable<br>&#10004; Missing variable means coefficient = 0<br>&#10004; Read polynomial carefully before answering<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Practice MCQs<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. What is the degree of <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>7<\/mn><msup><mi>x<\/mi><mn>5<\/mn><\/msup><mo>+<\/mo><mn>2<\/mn><msup><mi>x<\/mi><mn>2<\/mn><\/msup><mo>&minus;<\/mo><mn>1<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">7x^5 + 2x^2 &ndash; 1<\/annotation><\/semantics><\/math>?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A) 2<br>B) 3<br>C) 5<br>D) 1<\/p><div class=\"mymoc-middle mymoc-entity-placement\" id=\"mymoc-3080763984\"><div id=\"mymoc-1785651851\"><a href=\"https:\/\/amzn.to\/4uMTpup\" aria-label=\"books\"><img src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/books.png\" alt=\"\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/books.png 1301w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/books-300x56.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/books-1024x190.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/books-768x143.png 768w\" sizes=\"(max-width: 1301px) 100vw, 1301px\" width=\"1301\" height=\"242\"><\/a><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">&#9989; C) 5<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\">2. What is the coefficient of <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msup><mi>x<\/mi><mn>2<\/mn><\/msup><\/mrow><annotation encoding=\"application\/x-tex\">x^2<\/annotation><\/semantics><\/math> in <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>4<\/mn><msup><mi>x<\/mi><mn>2<\/mn><\/msup><mo>+<\/mo><mn>7<\/mn><mi>x<\/mi><mo>&minus;<\/mo><mn>3<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">4x^2 + 7x &ndash; 3<\/annotation><\/semantics><\/math>?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A) 4<br>B) 7<br>C) -3<br>D) 2<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">&#9989; A) 4<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\">3. Which is a linear polynomial?<\/h2>\n\n\n\n<div class=\"internal-linking-related-contents\"><a href=\"https:\/\/mymockmate.com\/notes\/class-10-maths-exercise-2-2-solutions-relationship-between-zeroes-and-coefficients\/\" class=\"template-2\"><span class=\"cta\">Related Topic to Read more<\/span><span class=\"postTitle\">Class 10 Maths Exercise 2.2 Solutions | Relationship Between Zeroes and Coefficients<\/span><\/a><\/div><p class=\"wp-block-paragraph\">A) <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msup><mi>x<\/mi><mn>2<\/mn><\/msup><mo>+<\/mo><mn>1<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">x^2 + 1<\/annotation><\/semantics><\/math><br>B) <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>2<\/mn><mi>x<\/mi><mo>+<\/mo><mn>5<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">2x + 5<\/annotation><\/semantics><\/math><br>C) <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msup><mi>x<\/mi><mn>3<\/mn><\/msup><mo>&minus;<\/mo><mn>7<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">x^3 &ndash; 7<\/annotation><\/semantics><\/math><br>D) <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msup><mi>x<\/mi><mn>4<\/mn><\/msup><mo>+<\/mo><mn>2<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">x^4 + 2<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">&#9989; B) <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>2<\/mn><mi>x<\/mi><mo>+<\/mo><mn>5<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">2x + 5<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">FAQ Section<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Q1. What is a polynomial?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A polynomial is an algebraic expression made of variables, coefficients, and powers.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q2. What is the degree of a polynomial?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The highest power of the variable is called the degree.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q3. What is a linear polynomial?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A polynomial with degree 1 is called a linear polynomial.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q4. What is a constant polynomial?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A polynomial having only a constant term is called a constant polynomial.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q5. Can coefficient be negative?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, coefficients can be positive or negative.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<p class=\"wp-block-paragraph\">Practice more Class 9 Mathematics chapter-wise questions and mock tests on <strong><a target=\"_blank\" rel=\"noreferrer noopener\">MyMockMate<\/a><\/strong> to improve your exam preparation and score better in school exams.<\/p>\n<div class=\"pdfprnt-buttons pdfprnt-buttons-post pdfprnt-top-bottom-right\"><a href=\"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2123?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Print Content\"><span class=\"pdfprnt-button-title pdfprnt-button-print-title\">Print<\/span><\/a> <span class=\"pdfprnt-count-generation\">18<\/span><\/div><div class=\"mymoc-bottom mymoc-entity-placement\" id=\"mymoc-515339147\"><div id=\"mymoc-730080277\"><a href=\"https:\/\/amzn.to\/4fDWGbw\" aria-label=\"smartwatch\"><img src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smartwatch.png\" alt=\"\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smartwatch.png 1717w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smartwatch-300x71.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smartwatch-1024x243.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smartwatch-768x182.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smartwatch-1536x364.png 1536w\" sizes=\"(max-width: 1717px) 100vw, 1717px\" width=\"1717\" height=\"407\"><\/a><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p> 18 Short Intro In this article, we provide complete step-by-step solutions for Exercise 2.1 from the chapter Introduction to Linear Polynomials for Class 9&#8230;<\/p>\n","protected":false},"author":1,"featured_media":2124,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""},"footnotes":""},"categories":[22,4,11],"tags":[668,136,666,665,88,676,78,670,663,669,662,672,674,667,671,664,675,87,673],"class_list":["post-2123","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cbse","category-class-9","category-maths-class-9","tag-algebraic-expressions","tag-class-9-maths","tag-class-9-polynomial-solutions","tag-coefficient-and-constant-term","tag-cubic-polynomial","tag-degree-of-polynomial","tag-exercise-2-1-solutions","tag-grade-9-maths-exercise-2-1","tag-introduction-to-linear-polynomials","tag-linear-polynomial-chapter","tag-linear-polynomials","tag-maths-solutions-for-class-9","tag-mymockmate-maths-solutions","tag-ncert-maths-class-9","tag-polynomial-concepts","tag-polynomial-degree-questions","tag-polynomial-exercise-answers","tag-quadratic-polynomial","tag-step-by-step-maths-solutions"],"featured_image_src":"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/NCERT-Class-9-Maths-Exercise-2.1-Solutions-\u2013-Introduction-to-Linear-Polynomials.png","author_info":{"display_name":"Team Mymockmate","author_link":"https:\/\/mymockmate.com\/notes\/author\/bsm_adm\/"},"_links":{"self":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2123","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/comments?post=2123"}],"version-history":[{"count":10,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2123\/revisions"}],"predecessor-version":[{"id":5485,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2123\/revisions\/5485"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/media\/2124"}],"wp:attachment":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/media?parent=2123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/categories?post=2123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/tags?post=2123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}