Correct. The y-intercept occurs where $\displaystyle{x}={0}\usepackage{cmbright}\Huge\$ . Now substitute this value into $\displaystyle{4}{x}-{9}{y}={36}\usepackage{cmbright}\Huge\$ : $\displaystyle-{9}{y}={36}\usepackage{cmbright}\Huge\$ , so $\displaystyle{y}=-{4}\usepackage{cmbright}\Huge\$ . The y-intercept is $\displaystyle{\left({0},-{4}\right)}\usepackage{cmbright}\Huge\$ . The missing y-coordinate is $\displaystyle-{4}\usepackage{cmbright}\Huge\$ .