SOLUTION: what is the domain and range of the inverse of the f(x)= Sqrt(x-4)

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Question 402065: what is the domain and range of the inverse of the f(x)= Sqrt(x-4)
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)= Sqrt(x-4)
y=sqrt(x-4)
x=sqrt(y-4)
x^2=y-4
y=x^2+4
.
The domain is all real numbers.
The range is 4 to infinity.
.
Ed