[tex]\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
A&({{ 4}}\quad ,&{{ 6}})\quad
% (c,d)
B&({{ -8}}\quad ,&{{ -3}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{-3-6}{-8-4}\implies \cfrac{-9}{-12}\implies \cfrac{3}{4}[/tex]
