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# what is perpendicular to y=1x

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1320
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what is perpendicular to y=1x

Dec 10, 2014

#2
+114436
+8

However....y = x is it's own inverse......since the inverse function reverses the original coordinates, all the points  on the "inverse" lie on the original function, itself.....

Dec 10, 2014

#1
+270
+5

y=x

The gradient for equation perpendicular to another is always $$-\frac{1}{m}$$

m being the gradient of original function.

Therefore, $$-\frac{1}{1}$$=-1

So it's y=-x which is inverse to the original function.

Dec 10, 2014
#2
+114436
+8