Question

State whether the slope of a line passing through (8, 8) and (6, -12) is positive, negative, zero or undefined

Answer 1

In order to find the slope, m, you would have to find the change in y over the change in x.

y2 - y1 -12 - 8 -20 -10
---------- = ---------- = ------- = -------- = 5
x2 - x1 6 - 8 -2 -2

The negatives would cancel out and you would get 5 as your slope, which is positive.