Question

Find the vertex, focus, directrix, and focal width of the parabola
-1/16x^2 = y

Answer 1

Why did you repost this?

Answer 2

It had 12 mins left to bump and I've had it unsolder forever :/

Answer 3

P = 4

Answer 4

Does it open up or down?

Answer 5

Up

Answer 6

The negative sign in front of the x^2 terms tells you that it opens down.

Answer 7

Ohhh okay lol

Answer 8

Since the focus is always inside the parabola, it will be 4 units below the vertex. The directrix is the horizontal line 4 units above the vertex.

Answer 9

I got my answer because of that. Yu are a life saver. Thank you so much for the help!