Locus of the point equidistant from (0,-1) and the line y=1 is
A parabola with vertex (0,0)
A parabola with focus (0,1)
A parabola with directrix y=-1
A parabola with axis y=0
Parabola (concept)
The locus of a point whose chord of contact with respect to parabola y2 = 8x passes through focus is