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OpenStudy (anonymous):
What is the slope of a line perpendicular to the line with equation y = 4x + 5? A. –4 B. -1/4 C. –5 D. 4
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OpenStudy (kobeni-chan):
B. because to find the slope of a perpendicular line, you find the opposite reciprocal of the given slope :)
OpenStudy (anonymous):
wait @kobeni-chan wouldn't it be A. -4, since the slope is 4??
OpenStudy (kobeni-chan):
You have to find the opposite reciprocal, so you have to make it negative and also flip-flop the number. You have to see it as 4/1, so the reciprocal is 1/4, made negative
OpenStudy (anonymous):
ooh, ok i get it now! thnx!! btw i love your profile pic
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