SOLUTION: f(x)=x^2-9 i am supposed to state if it has a minimum or maximum. how do you figure this out. please help me if possible thanks.

Algebra ->  Rational-functions -> SOLUTION: f(x)=x^2-9 i am supposed to state if it has a minimum or maximum. how do you figure this out. please help me if possible thanks.      Log On


   

Question 280072: f(x)=x^2-9 i am supposed to state if it has a minimum or maximum. how do you figure this out. please help me if possible thanks.
Answer by Stitch(470) About Me  (Show Source):
You can put this solution on YOUR website!
Graph it:
graph%28300%2C200%2C-10%2C10%2C-10%2C10%2Cx%5E2-9%29
The graph has a minimum at (0,-9). We know this is a minimum because the graph curves up and goes on to infinity.