What is the evaluation of

(5,-8) m=-3

y = - 3x + 7

Step-by-step explanation:

Plug in. Using y - y1 = m (x - x1)

So, y - (-8) = - 3 (x - 5)

2 negatives make a positive, so let's re-wrtie our equation.

y + 8 = - 3 (x - 5)

Distribute,

y + 8 = - 3x + 15

Subtract 8 from both sides

Final answer y = - 3x + 7.