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5 votes
Find the equation of a parabola with a focus at (0,–1) and a directrix at y = 4.

y=−110(x+1)2+32
y
=

1
10
(
x
+
1
)
2
+
3
2

y=−110x2+32
y
=

1
10
x
2
+
3
2

y=−18(x+1)2+2
y
=

1
8
(
x
+
1
)
2
+
2

y=−18x2+32

User PSKP
by
7.3k points

1 Answer

2 votes

Answer:

2:)

Explanation:

Bc it is

User Gareth Jordan
by
7.3k points