Correct. The y-intercept occurs where $\displaystyle{x}={0}\usepackage{cmbright}\Huge\$ . Substitute this value into $\displaystyle{y}={x}-{3}\usepackage{cmbright}\Huge\$ : $\displaystyle{y}={\left({0}\right)}-{3}=-{3}\usepackage{cmbright}\Huge\$ . The coordinates of the y-intercept are $\displaystyle{\left({0},-{3}\right)}\usepackage{cmbright}\Huge\$ . The missing y-coordinate is $\displaystyle-{3}\usepackage{cmbright}\Huge\$ .