Role of a, h and k in y = a (x - h)2+ k
The purpose of this applet is to illustrate how the values of
a, h and k affect the parabola y = a( x - h)2 + k. Use it as follows:
- Use the scroll bar to change the values of a (between -10 and 10). The opening
of the parabola should change as a changes. The value of a to the left of
the scroll bar should also be updated. Note: The applet will not allow a to be 0. a( x - h)2 + k is a quadratic function only when a is not 0.
- Use the scroll bar to change the values of h and k (between -10 and 10).
The position but not the shape of the parabola should change as h and k change.
The value of h and k to the left of the scroll bar should also be updated.
This applet was developed by Dr. Philippe
B. Laval, at Kennesaw State
University.
This work was funded in part by:
The National Science Foundation # DUE-9952568
The US Department of Education FIPSE #P116B00178