Write an equation for a parabola with vertex(-2,4) and passing through (-1,8) It should be simple im just not getting it
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$\displaystyle y = a(x-h)^2 + k$ vertex is at $\displaystyle (h,k) = (-2,4)$ plug in -1 for $\displaystyle x$ and 8 for $\displaystyle y$ ... solve for "$\displaystyle a$".
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