The end point of the solution is a closed circle at $\displaystyle-{6}\usepackage{cmbright}\Huge\$ , so $\displaystyle-{6}\usepackage{cmbright}\Huge\$ is included in the inequality. The points on the graph are to the left, so they represent numbers that are less than $\displaystyle-{6}\usepackage{cmbright}\Huge\$ . This is the graph of the inequality $\displaystyle{x}\le-{6}\usepackage{cmbright}\Huge\$ .