x = 5, y = 2 is a solution of the linear equation
a. x + 2y = 7
b. 5x + 2y = 7
c. x + y = 7
d. 5 x + y = 7

Solution:

The solution of the linear equation given is x = 5, y = 2

Let us substitute it in each option to get the linear equation

a. x + 2y = 7

5 + 2 (2) = 7

5 + 4 = 7

9 ≠ 7

b. 5x + 2y = 7

5(5) + 2(2) = 7

25 + 4 = 7

29 ≠ 7

c. x + y = 7

5 + 2 = 7

7 = 7

d. 5x + y = 7

5(5) + 2 = 7

25 + 2 = 7

27 ≠ 7

Therefore, the solution is of the linear equation x + y = 7.

✦ Try This: x = 4, y = 3 is a solution of the linear equation a. x + 3 y = 7, b. 4x + 3y = 7, c. x + y = 7, d. 4 x + y = 7

☛ Also Check: NCERT Solutions for Class 9 Maths Chapter 4

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NCERT Exemplar Class 9 Maths Exercise 4.1 Problem 11

x = 5, y = 2 is a solution of the linear equation a. x + 2y = 7, b. 5x + 2y = 7, c. x + y = 7, d. 5 x + y = 7

Summary:

An equation that has the highest degree of 1 is known as a linear equation. x = 5, y = 2 is a solution of the linear equation x + y = 7

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