3 years ago

AB is perpendicular to CD. If the slope of AB is 2/5, what is the slope of CD?

1 answer:

4 0

Given a slope $m$ , the slope $m'$ of a line perpendicular to $m$ is the opposite of the inverse of $m$

In other words:

$mm' = -1 \iff m' = -\dfrac{1}{m}$

So, the slope of CD is -5/2.

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3 years ago

AB is perpendicular to CD. If the slope of AB is 2/5, what is the slope of CD?​