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Mathematics 8 Online
OpenStudy (gio333):

How are the slopes of perpendicular lines related?

OpenStudy (anonymous):

opposite reciprocal

OpenStudy (anonymous):

So, a slope of 1/3 is perpendicular to -3/1 = -3

jimthompson5910 (jim_thompson5910):

Also, say you had two lines that are perpendicular. If these perpendicular lines have slopes of m and n, then they multiply to -1. m*n = -1

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