The formula for finding the slope of a straight line between (or through) two points is:

$m=\frac{y_2-y_1}{x_2-x_1}$

One point has coordinates $(x_1,y_1)$ , the other has coordinates $(x_2,y_2)$ . It doesn’t matter which one is which, as long as whichever point is first on the top line is also first on the bottom line.

Example:

$(x_1,y_1)=(0,6)$ and $(x_2,y_2)=(3,30)$

Therefore,

$m=\frac{y_2-y_1}{x_2-x_1}=\frac{30-6}{3-0}=\frac{24}{3}=8$

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6A6 Slope using coordinates

Test Out Skill 3