Question

I need help with this: how to graph f(x)=x^2-9

Answer 1

There is the graph

https://www.google.com/search?q=quick+math&oq=quick+math&aqs=chrome..69i57.1837j0j1&sourceid=chrome&ie=UTF-8#q=graph+f(x)%3Dx%5E2-9

Answer 2

I have seen that but, I need to know how to explain how I did it.

Answer 3

find 3 points: the vertex, and the x intercepts tend to be applicable

Answer 4

of course the more points you define the better looking the sketch is

Answer 5

I got it. Thanks for the help though, guys!