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

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Answer 1 · 2016-08-04T12:31:27

$-1$

$y=mx+c$
where m is the slope of the line
Slope $m1$ of the line perpendicular to the above line will be
$m1=-1/m$

So Slope $m1$ of the line perpendicular to the line $y=x$ will be
$-1$

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