A parabola has vertex $(4,2)$ and passes through $(2,0).$  Enter the equation of the parabola in the form "$y = ax^2 + bx + c$".
Question:
A parabola has vertex $(4,2)$ and passes through $(2,0).$  Enter the equation of the parabola in the form "$y = ax^2 + bx + c$".
Answer:
Let's think step by step.

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y = -\frac{1}{2} x^2 + 4x - 6
A parabola has vertex $(4,2)$ and passes through $(2,0).$  Enter the equation of the parabola in the form "$y = ax^2 + bx + c$".
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