Answer
The equation matches with the graph labeled as (c).
Work Step by Step
$y^2=2x$
$y^2=4(\frac{1}{2})x$
It is a parabola with horizontal axis. The focus is the point: $(\frac{1}{2},0)$. That is, the parabola opens to the right side.
The equation matches with the graph labeled as (c).