[latex]m= \frac{ y_{2} - y_{1} }{ x_{2}- x_{1} } [/latex] Using this formula and plugging in the points, we get: [latex]m= \frac{ 13 - 20 }{17-6}= \frac{-7}{11} [/latex]

y2-y1/x2-x1 13-20/ 17-6= -7/ 11