Question

Find the slope of the line that is perpendicular to the line that passes through the points (5,2) and (8,1)

Answer 1

3

Explanation:

The slope of the line passing through the points is

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

= ( 1-2)/(8-5)

= -1/3

The slope that is perpendicular is the negative reciprocal which is

- ( 1/(-1/3)

+ 3/1

The perpendicular slope is 3