How do you find the slope given (-1,8), (4,-7)?

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How do you find the slope given (-1,8), (4,-7)?

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Answer 1 · 2018-03-23T16:19:00

$m = - 3$ $m=-3$

Explanation:

given points are $(- 1, 8) and (4, - 7)$ $(-1,8) and (4,-7)$

Therefore,
$x_{1} = - 1$ $x_1=-1$ $d d d d i d d d d$ $color(white)(ddddidddd$ and $d d d d d d d d d$ $color(white)(ddddddddd$ $y_{1} = 8$ $y_1=8$
$x_{2} = 4$ $x_2=4$ $d d d d d d d d d d d$ $color(white)(ddddddddddd$ and $d d d d d d d d d$ $color(white)(ddddddddd$ $y_{2} = - 7$ $y_2=-7$

$m = \frac{y_{1} - y_{2}}{x_{1} - x_{2}}$ $m=(y_1-y_2)/(x_1-x_2)$

$m = \frac{- 7 - 8}{4 + 1}$ $m=(-7-8)/(4+1)$

$m = - \frac{15}{5}$ $m=-15/5$

$m = - 3$ $m=-3$

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How do you find the slope given (-1,8), (4,-7)?

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