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What is the slope of the line passing through $(1, - 1); (- 2, 0)$ $(1,-1); (-2,0)$ ?

1 Answer

Dec 10, 2015

Slope: $(- \frac{1}{3})$ $(-1/3)$

Explanation:

For two general points $(x_{1}, y_{1})$ $(x_1,y_1)$ and $(x_{2} - y_{2})$ $(x_2-y_2)$ , the slope $m$ $m$ is
$color(white)("XXX")m = (Delta y)/(Delta x) = (y_2-y_1)/(x_2-x_1)$

Given the specific points $(1,-1)$ and $(-2,0)$ , this becomes
$color(white)("XXX")m=(0-(-1))/(-2-1)=1/(-3) = -1/3$

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