Given that the directrix is at y = 4 and the focus is at (0, -4), then the vertex is at (h, k) = (0, 0).
p is the distance between the vertex and the focus and between the vertex and the directrix = 4 and since the focus is below the directrix, p is negative, i.e. p = -4
Equation of a parabola is given by (x - h)^2 = 4p(y - k)
Therefore, the required equation is (x - 0)^2 = 4(-4)(y - 0)
x^2 = -16y
y = -1/16 x^2
Answer:
8
Step-by-step explanation:
Answer:
A=
π
r
2
=
π
3
2
≈
<u>28.27433</u>
Step-by-step explanation:
Answer:
y=5/2
Step-by-step explanation:
Answer:
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