8. Find the slope of a line that is perpendicular to the line containing the points (-2, -1) and (2,- 3).

0m = - 2

m = 2

Om = - 1/2

m = - 1

1 answer

slope of line joining the given points
= (-3+1)/(2+2) = -2/4 = -1/2

So slope of perpendicular line is 2