Question

4x - y = 8 -8x + 2y = -5

Answer 1

use system of equations

Answer 2

4x - y = 8
-8x + 2y = -5

So we need to find a way when we add these equations that something will cancel. So let's multiply the top one by 2.

8x - 2y = 8
-8x + 2y = -5

Added together we get
0x + 0y = 3

Since 0 does not equal 3, we say there is no solution, or give it a null set! :D