F.IF.6 Average Rate

This applet will give you the ability to discover the average rate from two points on a parabola.
A. How is the rate calculated? B. Where do you need to place the points to get a positive slope? Why? C. Where do you need to place the points to get a negative slope? Why? D. Where do you need to place the points to get a zero slope? Why? E. Where do you need to place the points to get the largest slope possible? Why?