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Write the equation for a parabola with vertex (-2 , 3) and focus ( -2, 1).

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Given: V(-2,3), F(-2,1).

VF = 1/4a = 1-3 = -2
4a = -1/2
a = -1/8.

Y = a(x-h)^2 + k.
Y = (-1/8)(x+2)^2 + 3.
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