Starting at the point $\displaystyle{\left(-{3},{4}\right)}\usepackage{cmbright}\Huge\$ , move three units down and then one unit to the right to get to the point $\displaystyle{\left(-{2},{1}\right)}\usepackage{cmbright}\Huge\$ . The rise is $\displaystyle-{3}\usepackage{cmbright}\Huge\$ and the run is 1.

$\displaystyle{s}{l}{o}{p}{e}=\frac{{{r}{i}{s}{e}}}{{{r}{u}{n}}}=\frac{{-{3}}}{{1}}=-{3}\usepackage{cmbright}\Huge\$