We will proceed to graph each case to determine the solution of the problem.
case a)
Using a graph tool
see the attached figure N
The solution is the shaded area
The inequality of the case a) is not represented by the graph
case b)
Using a graph tool
see the attached figure N
The solution is the shaded area
The inequality of the case b) is represented by the graph
case c)
Using a graph tool
see the attached figure N
The solution is the shaded area
The inequality of the case c) is not represented by the graph
case d)
Using a graph tool
see the attached figure N
The solution is the shaded area
The inequality of the case d) is not represented by the graph
therefore
the answer is
The inequality is represented by the graph