Posted by **caduceus** on Sunday, November 10, 2013 at 11:01pm.

What is the slope of the line that is perpendicular to the line represented by the equation below?

4x - 5y = -1

A. 4/5

B. -4/5

C. 5/4

D. -5/4

is this c or d? reiny, i used what you said, but since this is subtraction i was unsure of whether or not it would be negative or not.

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