Question

Identify and verify the values of x and y that simultaneously satisfy the pair of equations

y = 2x + 6 and y = –4x – 6 by graphing. *

Answer 1

x = -2 y = 2

Explanation:

Comparing the values of y

2x + 6 = -4x - 6

6x = -12

x = -2

Now,

y = 2x + 6 Or y = -4x - 6

y = 2(-2) + 6 Or y = -4(-2) - 6

y = -4 + 6 Or y = 8 - 6

y = 2 Or y = 2

Therefore,

x = -2 & y = 2