Answer:
B. p=(25/16,0)
Step-by-step explanation:
(y - k)2 = 4p (x - h) is the equation of a parabola since the axis of symmetry is is along x=0
Where (h,k) is the center
and (h+p, k) is the focus
The vertex is 0,0 so h and k are 0
(y - k)2 = 4p (x - h)
y^2 =4p (x)
We can use one of the points to determine p
5^2 =4*p*4
25 = 16p
Divide by 16
25/16 =p
focus = (25/16,0)
