Medium
Write the equation for a parabola with a focus at (1,−4)(1,-4)(1,−4) and a directrix at x=2x=2x=2.
x=3−(y+4)22x=\frac{3-(y+4)^{2}}{2}x=23−(y+4)2
x=3+(y+4)22x=\frac{3+(y+4)^{2}}{2}x=23+(y+4)2
x=3−(y−4)22x=\frac{3-(y-4)^{2}}{2}x=23−(y−4)2
x=4−(y+3)2x= 4-(y+3)^{2}x=4−(y+3)2
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