Could two lines with negative slope be perpendicular? Explain.

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asked Jul 28, 2018 75.9k views

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Louanne · Answer 1 · 2018-08-02T22:12:28+0000

No. For two lines to be perpendicular their slope must be the negative reciprocals of one another, mathematically:

m1*m2=-1

So if the slope of one line is negative, the line perpendicular to this must be positive by definition.

Could two lines with negative slope be perpendicular? Explain.

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