Question 554723
y^2-25x=0
y^2=25x
This is an equation of a parabola of the standard form: (y-k)^=4p(x-h), with (h,k) being the (x,y) coordinates of the vertex.
For given equation: y^2=25x
Vertex: (0,0)
axis of symmetry: x-axis or y=0 (parabola opens rightward)
4p=25
p=25/4=6.25
focus=(p,0)=(6.25,0)
directrix: x=-6.25 (p distance from vertex on the axis of symmetry)