The simulation at

http://phet.colorado.edu/sims/equation-grapher/equation-grapher_en.html

allows you to vary the parameters of a quadratic function and see how the graph changes as a result.  You can use sliders to vary a, b and c, or you can enter numbers.

Investigate what happens when you vary the a parameter, and give a brief description of what you see and how it is related to what you are learning in Modeling Project 1.

Now see what happens when you vary the b parameter, and once more give a brief description and see if you can relate it to what you have done in Modeling Project 1.

If you increase the b parameter, does the graph move to the right or the left?  Does it move up or down?  Does either answer depend on the value of the a parameter?

If you want to move the vertex to a specific point, can you figure out in advance how much to change the b and c parameters, or are there confounding factors that confuse the process?

Give your best responses, copy them into a Submit Work Form and submit.