In this applet, we explore parabolic graphs of the form y = ax^2 + bx + c (where a, b, and c are rational numbers), and examine what happens to the graph as we vary the values of a, b, and c.

1) What happens to the graph as we move just a?
2) What happens to the graph as we move just b?
3) What happens to the graph as we move just c?
4) What happens when a=0? Why do you think this is?
5) What happens when b=0? Why do you think this is?
6) What happens when c=0? Why do you think this is?