Problem
Graph the equation and identify the $y$-intercept. \[ y=\frac{1}{3} x \]
Solution
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).
