[tex] \bf \stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}~\hspace{5em}y+3=\cfrac{1}{3}(x-1)\implies y-\stackrel{\stackrel{y_1}{\downarrow }}{(-3)}=\cfrac{1}{3}(x-\stackrel{\stackrel{x_1}{\downarrow }}{1})
\\\\\\
~\hspace{25em}\begin{array}{|c|ll}
\cline{1-1}
(x_1,y_1)\\
\cline{1-1}
\\
(1~,-3)
\\\\
\cline{1-1}
\end{array} [/tex]
