Question

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Find an equation of a parabola with a vertex at the origin and directrix y = –4

Answer 1

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Answer 2

The awnser is x does not intercept I hope I helped you

Answer 3

The directrix is y=-4

Answer 4

I'd suggest you lay out a set of coordinate axes (x- and y-axes) and graph the directrix (y=-4) and the vertex (0,0). You can see that the distance |p| between directrix and vertex is 4. The focus is the same distance UPWARD from the vertex; can you identify its coordinates?

Answer 5

You can determine from the given info whether the parabolic graph opens up or down, to the left or to the right. Which is it?