SOLUTION: Which is the inverse of f(x)=√2x+5 ? I put a link of the answer choices below because I don't want to mess the answers up. Thanks. Link ; http://prntscr.com/9y4zyn

Algebra ->  Inverses -> SOLUTION: Which is the inverse of f(x)=√2x+5 ? I put a link of the answer choices below because I don't want to mess the answers up. Thanks. Link ; http://prntscr.com/9y4zyn       Log On


   



Question 1017382: Which is the inverse of f(x)=√2x+5 ?
I put a link of the answer choices below because I don't want to mess the answers up. Thanks.
Link ; http://prntscr.com/9y4zyn
thanks!

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
x= sqrt(2y+5)
x^2=2y+5
x^2-5=2y
y=(1/2)(x^2-5), which is D, and I did this before looking at the choices.
graph%28300%2C200%2C-10%2C10%2C-10%2C10%2Csqrt%282x%2B5%29%2C%281%2F2%29%28x%5E2-5%29%29