SOLUTION: my question is Find the inverse of f(x)= the sqaure root of x+7 I can't seem to find examples anywhere Thanks for your help.

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Question 1145418: my question is
Find the inverse of f(x)= the sqaure root of x+7
I can't seem to find examples anywhere
Thanks for your help.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find the inverse of f(x)= the sqaure root of x+7
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y = sqrt(x+7)
Swap the variables.
x = sqrt(y+7)
solve for y
x^2 = y + 7
y = x^2 - 7