Medium
Write the equation for a parabola with a focus at (1,2)(1,2)(1,2) and a directrix at y=6y=6y=6.
y=−(x−1)28+4y=-\frac{(x-1)^{2}}{8}+4y=−8(x−1)2+4
y=(x−1)28+4y=\frac{(x-1)^{2}}{8}+4 y=8(x−1)2+4
y=(x−8)24+1 y=\frac{(x-8)^{2}}{4}+1y=4(x−8)2+1
y=(x+8)2−14 y=\frac{(x+8)^{2}-1}{4}y=4(x+8)2−1
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