Question

Find the slope of the line passing through the pair of points. (0, 21), (9, 0)

Answer 1

m =-7/3

Explanation:

`\mathrm{Slope\:between\:two\:points}:\quad \mathrm{Slope}=(y_2-y_1)/(x_2-x_1)\\\\\left(x_1,\:y_1\right)=\left(0,\:21\right),\:\left(x_2,\:y_2\right)=\left(9,\:0\right)\\\\m=(0-21)/(9-0)\\\\m = (-21)/(9) \\\\Use\:3\:to\:divide\:through \\m=-(7)/(3)`