Solve $y < 2$ graphically.

(N/A) The graph of $y = 2$ is shown in the figure.
Let us select a point $(0, 0)$ in the lower half-plane $I$ and substitute $y = 0$ into the given inequality:
$0 < 2$,which is true.
Thus,the solution region is the shaded region below the line $y = 2$. Hence,every point below the line (excluding all the points on the line,as indicated by the dashed line) represents the solution of the given inequality.