You may have confused this point with $\displaystyle{\left({3},-{2}\right)}\usepackage{cmbright}\Huge\$ , which does lie within the solution. The point $\displaystyle{\left(-{2},{3}\right)}\usepackage{cmbright}\Huge\$ lies in the region below the solid line, but not below the dashed line. So it does not lie in the overlapping region, which represents the solution.