## anonymous one year ago Find the standard form of the equation of the parabola with a focus at (0, -10) and a directrix at y = 10.

1. anonymous

YAY!!!!!1

2. anonymous

MORE OF THIS!!!!! :D Okay, so the basic formula is: $y= (1/4p) x^2$

3. anonymous

So, we know the focus is (0,p) and the directrix is y=-p Use the information to create your equation: $y= 1/4(-10) \times x^2$

4. anonymous

Does that help?

5. anonymous

Yes.

6. anonymous

Okay! If you need anymore help/ deeper explanation, send me a message! I <3 this topic!

7. anonymous

I'll do that.

8. misty1212

HI!!

9. misty1212

you need the vertex do you know it?

10. anonymous

I don't believe I need the vertex.