to get the slope, all we need is two points, so let's pick two off the table.
[tex]\bf \setlength{\fboxsep}{1pt} \begin{array}{rrll} x&y\\ \cline{1-2}\\ \boxed{-2}&\boxed{8}\\ -1&2\\ \boxed{0}&\boxed{-4}\\ 1&-10\\ 2&-16 \end{array}~\hspace{5em} (\stackrel{x_1}{-2}~,~\stackrel{y_1}{8})\qquad (\stackrel{x_2}{0}~,~\stackrel{y_2}{-4}) \\\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-4-8}{0-(-2)}\implies \cfrac{-4-8}{0+2}\implies \cfrac{-12}{2}\implies -6[/tex]
