Question

find the slope of the line through points (1,8) and (2,7). write the answer in simplest form.

Answer 1

The slope formula is (y2-y1)/(x2-x1). By plugging this in, you get (7-8)/(2-1) = -1/1 = -1
So, the slope is -1.

Answer 2

(X1, Y1) (X2, Y2)

Y2-Y1/X2-X1

so the answer is -1