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9 January, 16:33

The equation of line m is 4x + 5y = - 2.

What is the slope of a line that is perpendicular to line m?

4/5

-5/4

2/5

5/4

+4
Answers (1)
  1. 9 January, 16:55
    0
    Perpendicular means negative reciprocal.

    4x+5y=-2

    5y = - 4x - 2

    y = - 4/5x - 2

    the negative reciprocal of - 4/5 is 5/4. (Negative times a negative is a positive)
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