Find the equation of a parabola with a focus of (0, 9) and directrix y = –9. A. Y= - 1/9x^2
B. Y= 1/36x^2
C. Y= - 1/36^2
D. Y= 1/9^2

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).

step-by-step explanation:

what was your answer?

p

step-by-step explanation:

choose (5, 1.5) and (-1.5,-3.5)

step-by-step explanation:

5 - 1.5 =3.5

-1.5 - (-3.5) = 2

3.5 + 2 =5.5

hope this !