Graph the equation and identify the $y$-intercept.
\[
y=\frac{1}{3} x
\]
The graph of the equation y=\frac{1}{3}x is the line passing through the points (0,0) and (3,1).
Step 1 :Plot the point (0,0) on the coordinate plane.
Step 2 :Plot the point (3,1) on the coordinate plane.
Step 3 :Connect the points (0,0) and (3,1) with a straight line.
Step 4 :The graph of the equation y=\frac{1}{3}x is the line passing through the points (0,0) and (3,1).