You may have chosen this graph because you mixed up the inequality symbols and because you do not understand what the word or means in a compound inequality. The numbers that are less than $\displaystyle-{2}\usepackage{cmbright}\Huge\$ are to the left of $\displaystyle-{2}\usepackage{cmbright}\Huge\$ ; the numbers greater than 4 are to the right of 4. If the word or is used, then you want all of these points.