The equation of the parabola with the sample shape as f(x) = 9x^2 but with vertex (-3,2) is? Thanks!!?

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The equation of the parabola with the sample shape as f(x) = 9x^2 but with vertex (-3,2) is? Thanks!!?

I have a choice of 4 answers: a) f(x)=9(x+3)^2 + 2 b) f(x)=(9x+3)^2 + 2 c) f(x)=9(X-2)^2 - 3 d) f(x)=9(X-3)^2 + 2. I think it is answer a, but I want to make sure. Any help would be appreciated

2007-04-17 06:54:13 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

3 answers

its A

2007-04-17 06:59:41 · answer #1 · answered by Anonymous · 0⤊ 0⤋

y=9(x+3)^2+2 you are right

2007-04-17 07:00:48 · answer #2 · answered by santmann2002 7 · 0⤊ 0⤋

Yes, you are right.
Vertex(r,k)

y=a(x-r)^2+k

y=9(x+3)^2+2

2007-04-17 07:04:35 · answer #3 · answered by iyiogrenci 6 · 0⤊ 0⤋