posted by Anonymous .
Sketch the graph of a quadratic function for which the
related quadratic equation has only one solution. Then,
sketch one that has two solutions. Explain how you
know by looking at the graph the number of solutions
A quadratic with one solution has intercepts on the x axis that are the same. y= x^2-1 is an example. If it has two solutions, it will be of the form y= x^2+2x -.2, and have two intercepts.
Plot these and make certain you understand it.