The first equation is shown in the graph, so it is part of the system. However, the second equation is not. The solution to the system is the point of intersection. The correct answer is $\displaystyle{y}+{4}={x}\usepackage{cmbright}\Huge\$ and $\displaystyle{x}+{y}=-{6}\usepackage{cmbright}\Huge\$ ; solution $\displaystyle={\left(-{1},-{5}\right)}\usepackage{cmbright}\Huge\$ .