The inequality is .

                   (Subtract x from each side)

                              (Simplify)

                         (Divide each side by 2)

                              (Simplify)

Draw a coordinate plane

Graph the line ,  means or .

So, the boundary line is included in the solution set.

The boundary should be drawn as a solid line.

Select a test point (0, 0)

                             (Substitute x = 0, y = 0)

                                        (Simplify)

graph is