Question

Find the slope of a line that goes through the
points (2, 8) and (6,-2).

Answer 1

-5/2

Explanation:

Slope m = (y2-y1)/(x2-x1)

m = (-2 - 8)/(6 - 2) = -10/4 = -5/2

so y = mx + b

y = -5/2x + b

Using (2,8)

8 = -5/2(2) + b

8 = -5 + b

b = 13

then y = -5/2x + 13