[tex]\bf (\stackrel{x_1}{-1}~,~\stackrel{y_1}{2})~\hspace{10em} \stackrel{slope}{m}\implies 3 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{2}=\stackrel{m}{3}[x-\stackrel{x_1}{(-1)}]\implies y-2=3(x+1)[/tex]
