SOLUTION: How could you use the x-intercepts to find the coordinates of the vertex, the x intercepts are -3 and -1. I know x=-1 for the vertex which I found when y=0 in the table of values.

Question 908440: How could you use the x-intercepts to find the coordinates of the vertex, the x intercepts are -3 and -1. I know x=-1 for the vertex which I found when y=0 in the table of values. I don't know how to find what y equals in the vertex I already know it equals -8 by graphing. (Quadratic relations of the Form y=a(x-r)(x-s))
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
http://www.algebra.com/algebra/homework/Functions/Functions.faq.question.189666.html
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