3 years ago

Given the function f(x)=9x+7, find its inverse.

1 answer:

3 0

$f(x)=9x+7\\
y=9x+7\\
9x=y-7\\
x=\dfrac{1}{9}y-\dfrac{7}{9}\\
f^{-1}(x)=\dfrac{1}{9}x-\dfrac{7}{9}$

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