vertex is directly in middle of directix and focus
distance from 8 to -8 is 16 16/2=8 so 8 below focus (since 8>-8) is the point (0,0 vertex is (0,0) nice
it opens up because focus is above directix also it goes up down so 4p(y-k)=(x-h)^2 (h,k) is veretx we got that (h,k) is (0,0) and p is distance from vertex to focus which is 8 so 4(8)(y-0)=(x-0)^2 32y=x^2 y=(1/32)x^2
