What is the slope of the line perpendicular to the line containing the points (–3, 1) and (–1, –2)? A: Strike Reset B: Strike Reset C: Strike Reset D: Strike Reset

Question

A:       Strike Reset 

B:       Strike Reset 

C:       Strike Reset 

D:       Strike Reset 

Answer 1

Well, slope is change in y over change in x, and perpendicular lines have opposite, reciprocal slopes, so...

m = -(-3 - (-1))/(1 - (-2)) = -(-2/3) = 2/3

C