Aparabola's focus is at (0,-2) and its directrix is at y=2. what is the equation for the parabola?

y = -8x

Step-by-step explanation:

Because the y-coordinate of the focus is -2, it's below the directrix, y = 2.  The vertex is at (0,0) Thus, the graph of the parabola opens down.  The appropriate equation is y = 4px, where p = -2.  Thus, we have y = 4(-2)x, or y = -8x.

answer is : muchas/tipicas

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~recklesschicken

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80