SOLUTION: Find an equation for the parabola, that has its vertex at the origin and directrix y = 6. I am still so confused by this. Please can someone explain this.

SOLUTION: Find an equation for the parabola, that has its vertex at the origin and directrix y = 6. I am still so confused by this. Please can someone explain this.

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Question 871809: Find an equation for the parabola, that has its vertex at the origin and directrix y = 6.
I am still so confused by this. Please can someone explain this.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
vertex at the origin and directrix y = 6.
Directrix is above the vertex, Parabola Opens Downward*** a < 0
y = ax^2 and , p = 6, 4p = 24, a = -1/24
y = -(1/24)x^2.
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