8. Conic Sections
Parabolas
Multiple Choice
Multiple ChoiceIf a parabola has the focus at (0,−1) and a directrix line y=1, find the standard equation for the parabola.
A
4y=x2
B
4(y−1)=x2
C
−4y=x2
D
−4(y+1)=x2
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