Answer:
y + 5 = (-13/4)(x - 3)
Step-by-step explanation:
Going from (-1, 8) to (3, -5), x (the 'run') increases by 4 and y (the 'rise') decreases by 13. Thus, the slope of the desired line is m = rise / run = -13/4.
The point-slope formula is
y - k = m(x - h), and here m = -13/4, k = -5 and h = 3:
y + 5 = (-13/4)(x - 3)