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Which equation represents a line that is perpendicular to the line whose equation is y = 4x + 12?

y = 4x + 4
y = -4x + 7
y = (-1/4x) + 1
y = (1/4x) + 9

User WarSame
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1 Answer

6 votes
y = (-1/4x) + 1

Perpendicular lines have the product of their gradients =-1
User Armen Tsirunyan
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