Explicación paso a paso:
[tex]m = \frac{y2 - y1}{x2 - x1} \\ m = \frac{ - 3 - 6}{8 - ( - 1)} \\ m = \frac{ - 9}{8 + 1} = \frac{ - 9}{9} = - 1 \\ y - y1 = m(x - x1) \\ y - 6 = - 1(x - ( - 1)) \\ y - 6 = - 1(x + 1) \\ y - 6 = - x - 1 \\ y - 6 + x + 1 = 0 \\ x + y - 5 = 0[/tex]
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Explicación paso a paso:
[tex]m = \frac{y2 - y1}{x2 - x1} \\ m = \frac{ - 3 - 6}{8 - ( - 1)} \\ m = \frac{ - 9}{8 + 1} = \frac{ - 9}{9} = - 1 \\ y - y1 = m(x - x1) \\ y - 6 = - 1(x - ( - 1)) \\ y - 6 = - 1(x + 1) \\ y - 6 = - x - 1 \\ y - 6 + x + 1 = 0 \\ x + y - 5 = 0[/tex]