Question 1101490
{{{4*2=8}}}
vertex, (2,1)
and form of equation means that symmetry axis horizontal; parabola opens toward the right.
focus, (4,1)
directrix, x=0 or (0,y).


{{{y=1+- sqrt(8(x-2))}}}


{{{graph(300,300,-6,6,-6,6,1-sqrt(8x-16),sqrt(8x-16))}}}