How do you find the slope that is perpendicular to the line $y=2x$ ?

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Answer 1 · 2016-07-13T12:00:58

$m = -1/2$

In lines are perpendicular, then the one slope is the negative reciprocal of the other,

(Turn it upside and change the sign.)

In this equation, $m = 2 = 2/1$

the perpendicular slope is then:

$m = -1/2$

the test for perpendicular slopes is that their product is equal to -1.

$2/1 xx -1/2 = -1$

How do you find the slope that is perpendicular to the line y=2xy=2x?