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Nolyugo · Answer 1 · 2019-07-18T22:37:29+0000

from the line, we can pretty much pick any two points to get its slope.

now, let's pick from those already grayed out there hmmm say (-8, 6) and (-2, 0),

$\bf \begin{array}{ccccccccc} &&x_1&&y_1&&x_2&&y_2\\ % (a,b) &&(~ -8 &,& 6~) % (c,d) &&(~ -2 &,& 0~) \end{array} \\\\\\ % slope = m slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{0-6}{-2-(8)}\implies \cfrac{0-6}{-2+8}\\\\\\ \cfrac{-6}{6}\implies -1$

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