thebinks28 thebinks28
  • 22-11-2020
  • Mathematics
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what is the inverse of f(x)=9x+7

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gufeliz1965
gufeliz1965 gufeliz1965
  • 22-11-2020

Let f(x) = y.

y = 9x + 7

Exchange x and y.

x = 9y + 7

Isolate y.

x - 7 = 9y

(x - 7)/9 = y

Let y = f^(-1) x

Answer: f^(-1) x = (x - 7)/9

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