How do you find the inverse of $y = 13/x$ and is it a function?

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Answer 1 · 2017-02-24T17:12:20

The inverse is itself and yes, it is a function from $CC - {0}$ to $CC$ .

$f(x) = y Rightarrow x = f^(-1)(y)$

Given y, how do you find x?

Multiply by $x$ .

$xy = 13$

Divide by $y$ .

$x = 13/y = f^(-1)(y)$

$13/text{thing} = f^(-1)(text{thing})$

$13/x = f^(-1)(x) = f(x)$

How do you find the inverse of y = 13/x y = 13/x and is it a function?