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1)Find the equation of a parabola whose vertex is (0,0) and directrix is the line y=3

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1)Find the equation of a parabola whose vertex is (0,0) and directrix is the line y=3.

2)Find the vertex, focus, and directrix of (x-2)^2=12(y+1). Find the latus rectum and graph the parabola, making sure that all points and axis are labeled.

3)Find the equation of the ellipse whose center is the origin and has a vertex at (0,5) and a focus at (0,3).