Question

For each parabola, find the vertex and focus.

x= (1/400)y^2


y= 1/8(x-3)^2-1

Answer 1

well, recall that a parabola with vertex at (h,k) is

y-k = a(x-h)^2

and for the focus, take a peek at

http://www.purplemath.com/modules/parabola.htm