Question

Line l has a slope of −3. The line through which of the following pair of points is perpendicular to l? hint: slope will be 1/3

A. (−6,−4),(−3,−3)
B. (−18,−1),(−3,0)
C. (−2,−3),(−3,−6)
D. (−4,−3),(−3,−6)

Answer 1

A (-6, -4),(-3,-3)

Explanation:

Formula for slope of a line is y2-y1/x2-x1

If you plug each equation in:

-3-(-4)/-3-(-6)=1/3

1/3 is the perpendicular slope of -3