Posted by jimmy on Monday, January 30, 2012 at 3:26pm.
Suppose that a quadratic equation had two xintercepts. How could you use the intercepts to find the vertex?

algebra  Reiny, Monday, January 30, 2012 at 3:43pm
take the midpoint of the xintercepts to get the x value of the vertex,
sub in that x value to get the y.