Solve the given inequality graphically in a two-dimensional plane: $y < -2$

(N/A) The graphical representation of $y = -2$ is given as a dotted line in the figure. This line divides the $xy$-plane into two half-planes.
Select a point (not on the line),which lies in one of the half-planes,to determine whether the point satisfies the given inequality or not.
We select the point $(0, 0)$.
It is observed that $0 < -2$,which is false.
Also,it is evident that any point on the line does not satisfy the given inequality.
Hence,every point below the line $y = -2$ (excluding all the points on the line) determines the solution of the given inequality.
The solution region is represented by the shaded region in the figure.