The boundary lines $\displaystyle{y}={1}\usepackage{cmbright}\Huge\$ , $\displaystyle{y}={3}\usepackage{cmbright}\Huge\$ , and $\displaystyle{y}=-{2}{x}+{2}\usepackage{cmbright}\Huge\$ are shown, and the solution to this system is contained in the shaded region. However, you may have confused the use of solid and dashed lines. A solid line is drawn when the inequality uses $\displaystyle\ge\usepackage{cmbright}\Huge\$ or $\displaystyle\le\usepackage{cmbright}\Huge\$ .