Which is the equation of a parabola with vertex (0, 0), that opens downward and has a focal width of 6?

how long did the flood last

step-by-step explanation:

then i will answer

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!