NCERT Class 9 Solutions: Linear Equation in Two Variable (Chapter 4) Exercise 4.2 – Part 2
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Following figure explains how to find x and y intercepts.
Q3 Check which of the following are solutions of the equation and which are not:


(



Solution:

Given the equation

A point is a solution to this equation, if it lies on the graph of the equation. That is the equation is satisfied when we put in corresponding coordinates and L.H.SR.H.S

Putting and in the L.H.S of the given equation,
L.H.SR.H.S
Therefore, is not a solution of this equation.

Putting and in the L.H.S of the given equation,
L.H.S R.H.S
Therefore, is not a solution of this equation.

Putting and in the L.H.S of the given equation,
R.H.S
Therefore, a solution of this equation.

Putting and in the L.H.S of the given equation,
L.H.SR.H.S
Therefore, is not a solution of this equation.

Putting and in the L.H.S of the given equation,
L.H.SR.H.S
Therefore, is not a solution of this equation.
Q4 Find the value of k, if is a solution of the equation
Solution:

Give the equation of

Since and is a solution to the equation, it must satisfy the equation
Thus,

So, the value of is