8. Conic Sections
Parabolas
Multiple Choice
Multiple ChoiceIf a parabola has the focus at (2,4) and a directrix line x=−4 , find the standard equation for the parabola.
A
12(x+1)=(y−4)2
B
−(x+1)=(y−4)2
C
12x=y2
D
4(x−1)=(y+4)2
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