The vertex of this parabola is at (2,-4). Which of the following could be its equation?
10
HH
-10
4e
(2,-4)
10+
O A. *= 2(y-4)2 + 2
B. y = 2(x - 2)2 + 4
c. x = 2(y + 4)2 + 2
D. y = 2(x - 2)2 - 4

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