Write an equation in standard form for each parabola.
Vertex (0, 0) and directrix y = 6.
y = -1/24x^2?
2 answers
I agree.
verified here:
http://www.wolframalpha.com/input/?i=parabola+y%3D-1%2F24+x%5E2
http://www.wolframalpha.com/input/?i=parabola+y%3D-1%2F24+x%5E2