Question

Find the slope, If it exists, of the line containing the pair of points.

(4,6) and (5,-9)

The slope m=?

Answer 1

m = -15

Answer 2

m=(y2-y1)/(x2-x1)
m=-9-6/5-4
m=-15/1
m=-15

Answer 3

slope formula
-9-6 over
5-4
-15
1
-15 divided by 1 is =-15