Given the directrix of y = 6 and focus of (0, 4), which is the equation of the parabola? Oy=-1x2 +5
4
Oy=-=x2-5
Oy=
1x2 + 5
4
Oy
1x2-5
4

Step-by-step explanation:

The directrix at y=6 is above the focus at y=4, so the parabola opens downward. This eliminates the last two choices.

The vertex is halfway between the focus and directrix, at y=5, eliminating the second choice. The first choice is appropriate.

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isn't it a pentagon? sense [3 (triangle) + 4 (rectangle)] - 2 (triangle and rectangle connected) = 5 (pentagon)