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September 3, 2014

September 3, 2014

Posted by **ladybug** on Wednesday, November 14, 2012 at 1:44pm.

- college algebra -
**Reiny**, Wednesday, November 14, 2012 at 2:02pmsince we know the vertex,start with

y = a(x-1)^2 - 4

but (0,-3) lies on it , so ...

-3 = a(0-1)^2 - 4

-3+4 = a

a = 1

y = (x-1)^2 - 4

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