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algebra

posted by on .

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.

  • algebra - ,

    5 y = 4 x + 1
    so
    y = (4/5) x + 1/5
    slope = 4/5
    so slope of perpendicular = -5/4

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