A quadratic equation forms a parabola when graphed. When
equals or , equals . This means that and are roots of the equation. If you know the roots, can you find the factors for a possible equation?
The factors for a possible equation are
See the hint for part (a).
See the hint for part (a). Because the parabola intersects the
-axis at only one point, its equation has a single factor, which is squared.
Use the eTool below to help you write and check a possible equation for each parabola.
Click on the link at right for the full eTool version: CCA 11-13 HW eTool