Posted by **Tessa** on Monday, February 8, 2010 at 10:06pm.

Hey I am working on math homework that involves "Standard Form to Vertex Form by Averaging." My class is just starting to learn this today, but I am totally lost still on what to do. Can you please help? The formula for this is y=a(x - h)^2 + k

the h is the x-value vertex and the k is the y-value vertex.

I got the first one done and it looks like this:

y=-x^2 + 2x +3

-1(x^2 - 2x - 3)

-1(x + 1)(x - 3)

x= -1 and 3

y=-(-1)^2 + 2(-1) + 3

y=-1 + 2 + 3

y= 4

then

h=-1 and k=4

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