Question

the

Answer 1

you know what this looks like? if so we can do it quick

Answer 2

that means your parabola has vertex half way between \((0,-4)\) and \((0,4)\) namely at \((0,0)\) so it will be easy to find the equation
it also means the parabola opens down

Answer 3

it means the coefficient of the y term will be negative, yes
because the vertex is \((0,0)\) it will look like
\[-4py=x^2\] where \(p\) is the distance between the focus and the vertex, namely \(p=4\)

Answer 4

plug in the 4 and get
\[-16y=x^2\] and you are done

Answer 5

you can check the answer is right by clicking here
http://www.wolframalpha.com/input/?i=parabola+-16y%3Dx^2
and sure happy to help anyone who says FLVSuscks

Answer 6

i got the dreaded question marks, let me refresh the browser so they will go away

Answer 7

ok focus is \((-5,5)\) and directrix is \(y=-1\) lets draw it

Answer 8

this one opens up
the vertex is half way between \((-5,5)\) and \((5,-1)\) namely at \((-5,2)\)