The given inequality is $ x > -3$
Consider the equation $x=-3$
It is represented by the dotted line as shown,
The line divides the XY plane into two half planes I and II consider a point 90,0) in the half plane II
We see that $ 0 > -3$ is true.
Therefore the half plane I is not the solution region.
The solution region of the given inequality in the half plane II excluding the line.
It is represented by the shaded region.