Correct. In order to be an inverse variation function, its equation must be of the form $\displaystyle{y}=\frac{{k}}{{x}}\usepackage{cmbright}\Huge\$ . Since $\displaystyle{y}={18}\usepackage{cmbright}\Huge\$ when $\displaystyle{x}={1}\usepackage{cmbright}\Huge\$ , if the function is an inverse variation, then $\displaystyle{k}={18}\usepackage{cmbright}\Huge\$ . Since the function $\displaystyle{y}=\frac{{18}}{{x}}\usepackage{cmbright}\Huge\$ matches each row of the table, the function is an inverse variation.