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OpenStudy (daedae17):
What is the slope of a line perpendicular to line (-7,0) (0,4) ? A.4/7 B.-4/7 C.-7/4 D.7/4
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Parth (parthkohli):
1) get the slope of the line which passes through these points. 2) get the reciprocal of that. 3) make it negative.
OpenStudy (anonymous):
for perpendicular lines the product of their slopes equals -1
OpenStudy (anonymous):
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