This graph matches the function $\displaystyle{f{{\left({x}\right)}}}=-{2}{x}-{3}\usepackage{cmbright}\Huge\$ , not $\displaystyle{f{{\left({x}\right)}}}={2}{x}-{3}\usepackage{cmbright}\Huge\$ . Try calculating some points such as when $\displaystyle{x}={4}\usepackage{cmbright}\Huge\$ , $\displaystyle{f{{\left({4}\right)}}}={2}{\left({4}\right)}-{3}={8}-{3}={5}\usepackage{cmbright}\Huge\$ so the correct graph should pass through the point (4, 5).