You can put this solution on YOUR website! Hello there,
Please consult the first page of this website: http://www.purplemath.com/modules/grphquad.htm
You can read on if you want.
Just a one sentence summary: Basically, you plug in x values for your equation (y = x^2 + 2) and then find y based on what you plugged in. Then you draw the co-ordinates in and join them.