ANSWER
See attachment
EXPLANATION
The given inequality is

To solve we need to graph this inequality.
To do that we graph the corresponding linear equation

This is a straight line with slope

and y-intercept (0,4)
The graph of this function is to the right of the origin.
The solution set of the corresponding inequality is the half plane that is shaded.
We plot the point (0,0) into the given inequality to determine which half plane must be shaded


This is true so we shade the lower half plane. The solution set is the lower half plane shaded in the attachment.
Note that the boundary line must be a dashed line because the inequality does not involve equal sign.