Chapter 4: Linear Equations in Two Variables

Q1. Find two solutions of 2x + 3y = 12.

Solution

When x = 0: y = 4 → (0, 4)
When y = 0: x = 6 → (6, 0)

Q2. Find the value of k if x = 2, y = 3 is a solution of 2x + ky = 13.

Solution

2(2) + 3k = 13
3k = 9
k = 3