Can you please walk me through this one too. Determine whether (-1, -8) is a solution for y=x-5...

since you are given the point to test as (-1,-8) that means x = -1 and y = -8

So, you plug in this values unto your equation. Plug in -1 for x and -8 for y

-8 = -1 - 5

but since it is NOT true that -8 = -6, the point (-1,-8) is NOT a solution for this equation.