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Find the inverse function of f(x) . F(x) = 7x - 9

User Maxoudela
by
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1 Answer

1 vote

The inverse of this function is f(x) =
(x + 9)/(7).


All inverse functions can be found by switching the x and f(x) values. Then you can solve for the new f(x). The result is the inverse function. Below is the step-by-step process for finding one.


f(x) = 7x - 9 ----> Switch the x and f(x)

x = 7f(x) - 9 -----> Add 9 to both sides

x + 9 = 7f(x) ----> Divide both sides by 7

f(x) =
(x + 9)/(7)

User Chos
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