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3 years ago

7

If the slope of line L is -2/5, what is the slope of line m so that line l and line m are perpendicular?

1 answer:

ki77a [65]3 years ago

3 0

Perpendicular lines have negative reciprocal slopes. So if the slope is -2/5...to find the negative reciprocal, " flip " the slope and change the sign.
So we flip -2/5 and we get 5/-2...and now we change the sign...and we get 5/2. So our perpendicular slope will be 5/2.

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