SOLUTION: what is the inverse of f(t)=(sqrt of 5t) + 9

Question 1080442: what is the inverse of f(t)=(sqrt of 5t) + 9
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
what is the inverse of f(t)=(sqrt of 5t) + 9
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1st:: Interchange x and y to get:
x = sqrt(5y) + 9
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2nd:: Solve for "y"::
sqrt(5y) = x-9
5y = x^2-18x+81
y = (1/5)(x^2 - 18x + 81)
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Cheers
Stan H.
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