Question

State the coordinates of the focus and the directrix equation for each parabola. *Show work and explain how you got what you got*

Answer 1

\[y = \frac{ 1 }{ 8 }x^2 - 4\]

Answer 2

Firejay5! You been hiding?

Personally, I don't like this form. Slightly more complicated than it has to be.

\(y+4 = \dfrac{1}{8}(x-0)^{2}\)

Now, THERE's a useful form. Vertex is staring at you. (0.-4)
Also, the axis of symmetry. x = 0

Now, what about that Focus and Directrix?

Answer 3

@satellite73 Can you work this problem out for me as an example, like the work for the focus and directrix and how you would get the answer