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

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asked Jan 18, 2018 147k views

2 Answers

Michael Fox · Answer 1 · 2018-01-23T10:26:53+0000

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)

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

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