SOLUTION: for the function defined f(x)=5x-4, find a formula for f^-1(x).

SOLUTION: for the function defined f(x)=5x-4, find a formula for f^-1(x).

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Question 46643: for the function defined f(x)=5x-4, find a formula for f^-1(x).
Answer by Nate(3500) (Show Source): You can put this solution on YOUR website!
f(x) = 5x - 4
y = 5x - 4
x = 5y - 4
x + 4 = 5y
(1/5)x + 4/5 = y
(1/5)x + 4/5 = f^-1(x)

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