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http://www.mathedpage.org/parabolas/factored.html

Henri Picciotto's Math Education Page

Henri Picciotto

This is a graph of *y = a(x-p)(x-q)*

You can move *p* and *q* along the x-axis, and change *a* using the slider

- For a given
*a*,*p*,*q* - What is the y-intercept? Why?
- What are the coordinates of the vertex? Why?
- For a given
*p*and*q*, how can you get the y-intercept where you want it? - For a given
*a*and*p*, how can you get the y-intercept where you want it?

- Download:
- the GeoGebra file
- the Cabri file

- Related pages on this site:
- Multiplying Binomials
- Making Connections
- Parabolas and Quadratics
- More Algebra
- More Applets