Find the focus, directrix, and axis of the parabola with equation:

a) x^2 = 12y

b) x^2 = 16y

It gives me a list to choose from (I can choose more than one).

Possible Answers for a:

(3,0), x = 3, x-axis

(0,3), y = -3, y-axis

(3,0), y = 3, y-axis

(0,-3), x = -3, x-axis

Possible answers for b:

(4,0), x = 4, x-axis

(0,4), y = -4, y-axis

(4,0), y = 4, y-axis

(0,-4), x = -4, x-axis

For both questions, I think the answers are options 2 and 3, but I am not sure.