SOLUTION: If f(x) = 5x - 7, what is f -1(x)? Thank you

Question 56063: If f(x) = 5x - 7, what is f -1(x)?
Thank you
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If f(x) = 5x - 7, what is f -1(x)?
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To get the inverse of a function interchange
the x's with the y'x and solve for y, as follows:
y=5x-7
Interchange to get:
x=5y-7
Solve for y to get:
y=(1/5)x+(7/5)
That is the inverse.
Cheers,
Stan H.
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