February 20, 2017

Homework Help: Math

Posted by Karen on Wednesday, January 20, 2010 at 10:29pm.

If (a,-3) is a point on the graph of y=x^2+4x, what is the value of a?

so far i have -3=x^2+4x

i can do the problem on my graphing calc but we can't use a graphing calc on the test so i need to know how to do it by hand. what do i do next?

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