Question

Determine 3 solutions to this equation: 4x - 2y = 8.

If the x's that have been given are 0, 2, and negative one, what could be a y for each of them?

Answer 1

I: 4x - 2y = 8
4 * 0 - 2y = 8
0 - 2y = 8
2y = 0 - 8
2y = -8
y = -8/2
y = -4

II: 4x - 2y = 8
4*2 - 2y = 8
8 - 2y = 8
2y = 8-8
2y = 0
y = 0/2
y = 0

III: 4x - 2y = 8
4 * (-1) - 2y = 8
-4 - 2y = 8
2y = -4-8
2y = -12
y = -12/2
y = -6