Incorrect. $\displaystyle{x}_{{1}}={10}\usepackage{cmbright}\Huge\$ , $\displaystyle{y}_{{1}}=-{3}\usepackage{cmbright}\Huge\$ , $\displaystyle{x}_{{2}}={8}\usepackage{cmbright}\Huge\$ , and $\displaystyle{y}_{{2}}=-{9}\usepackage{cmbright}\Huge\$

Substitute the values into the slope formula $\displaystyle{m}=\frac{{{y}_{{2}}-{y}_{{1}}}}{{{x}_{{2}}-{x}_{{1}}}}\usepackage{cmbright}\Huge\$ and simplify.

The correct answer is 3.