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Algebra 8 Online
OpenStudy (anonymous):

The slope of a line is -1/3. Find the slope of a line that is perpendicular to this line.

OpenStudy (anonymous):

if the slope is k and the perpendicular slope is m, then by definition, m*k=-1. From then you just substitute to find that the perpendicular slope m=3.

OpenStudy (anonymous):

it's just the negative reciprocal of the slope -- and that is m=3 :)

OpenStudy (anonymous):

Thank you!

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