The focus of a parabola is (3,−7) and the directrix is y=−4.

2 answers:

7 0

We know that
y=-4
compared to focus (3,-7)
vertex is in middle
so
(-4-7)/2----> -5.5
so
vertex is (3,-5.5)
and distance from vertex to focus is from -5.5 to -7 or 1.5
focus is below vertex
so
p is negative
is a vertical parabola open down

(x-3)²=4(-1.5)(y+5.5)(x-3)²=-6(y+5.5)

the answer is the option
D) (x−3)2=−6(y+5.5)

koban [17]3 years ago

7 0

Answer:

(x−3)2=−6(y+5.5)

Step-by-step explanation:

I took the quiz

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