NCERT Solutions for class 10 Maths Chapter 3: Pair Of Linear Equations In Two Variables

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Jasmine Grover

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NCERT Solutions for Class 10 Maths Chapter 3: Pair of Linear Equations in Two Variables are provided in this article. A pair of linear equations in two variables having a solution is known as a consistent pair of linear equations. Equivalent pair of linear equations has infinitely many distinct common solutions, such a pair of solutions is known as a dependent pair of linear equations in two variables.

Class 10 Maths Chapter 3 Linear Equations in Two Variables belongs to Unit 2 Algebra which has a weightage of 20 marks in the CBSE Class 10 Maths Examination. The NCERT solutions of the chapter include questions related to the Substitution method, Elimination method, and Cross-multiplication method.

Download PDF: NCERT Solutions for Class 10 Mathematics Chapter 3


NCERT Solutions for Class 10 Mathematics Chapter 3

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Important Topics in Class 10 Maths Chapter 3

  • Linear Equations are the equations in which the powers of all the involved variables are one. 
The general form of a linear equation in two variables is ax + by + c = 0, where a and b cannot be simultaneously zero.
  • The solution of a linear equation in two variables is generally a pair of values, one for x and the other for y, which makes the two sides of the equation equal.

For example: If 3x + y = 6, then (0,6) is one of its solutions as it satisfies the equation. 

Linear Equation in 2 variables graph

  • A pair of linear equations in two variables can be represented as shown below – 

\(a_1x + b_1y+c_1=0\\ a_2x + b_2y+c_2=0\)

  • The solution for a consistent pair of linear equations can be found using various methods.

i) Elimination method

ii) Substitution Method 

iii) Cross-multiplication of solving linear equations

iv) Graphical method


NCERT Solutions For Class 10 Maths Chapter 3 Exercises:

The detailed solutions for all the NCERT Solutions for Pair of Linear Equations in Two Variables under different exercises are as follows:


Related Topics:

CBSE Class 10 Mathematics Study Guides:

CBSE X Related Questions

  • 1.

    Which of the following sequence is \(\textit{not }\)an A.P. ?
     

      • \( 2, \frac{5}{2}, 3, \frac{7}{2}, \dots \)
      • \( -1.2, -3.2, -5.2, -7.2, \dots \)
      • \( \sqrt{2}, \sqrt{8}, \sqrt{18}, \dots \)
      • \( 1^2, 3^2, 5^2, 7^2, \dots \)

    • 2.
      The graph of \(y = f(x)\) is given. The number of zeroes of \(f(x)\) is :

        • 0
        • 1
        • 3
        • 2

      • 3.
        Through the mid-point Q of side CD of a parallelogram ABCD, the line AR is drawn which intersects BD at P and produced BC at R. Prove that \(AQ = QR\).


          • 4.
            Assertion (A) : H.C.F. \((36 m^{2}, 18 m) = 18 m\), where \(m\) is a prime number.
            Reason (R) : H.C.F. of two numbers is always less than or equal to the smaller number.

              • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
              • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
              • Assertion (A) is true, but Reason (R) is false.
              • Assertion (A) is false, but Reason (R) is true.

            • 5.
              If the median of the following distribution is 32.5, then find the values of x and y.


                • 6.
                  Three tennis balls are just packed in a cylindrical jar. If radius of each ball is \(r\), volume of air inside the jar is

                    • \(2\pi r^3\)
                    • \(3\pi r^3\)
                    • \(5\pi r^3\)
                    • \(4\pi r^3\)

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