Find the vertex, focus, and directrix of the parabola with the given equation.(y + 1)2 = 12(x - 4)

A. vertex: (-1, 4)  
focus: (2, 4)  
directrix: x = -4
B. vertex: (4, -1)  
focus: (7, -1)  
directrix: x = 1
C. vertex: (-4, 1)  
focus: (-1, 1)  
directrix: x = -7
D. vertex: (4, -1)  
focus: (1, -1)  
directrix: x = 7


Answer: B

Mathematics

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A.

B.

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D.

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