Question

If two lines are perpendicular, which statement must be true?

A. The product of their slopes is -1.
B. Their slopes are equal.
C. The product of their slopes is 1.
D. Their slopes are opposites.

Answer 1

for example say a line has a slope of 2 what would the line perpendicular to this lines slope be?

Answer 2

it would be -1/2 so you could say since the that the product of the slopes is 2(-1/2) = -1

Answer 3

why is the slope -1/2...?

Answer 4

so it would be D the slopes would be opposite

Answer 5

tallan it is not -2

Answer 6

find the slopes of both of these lines