Question

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

Answer 1

Answer:

m =-7/3

Step-by-step explanation:

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

Answer 2

Answer:

y=-2.3x+21 and m=-7/3 or -2.3

Step-by-step explanation:

use the $\frac{y2-y1}{x2-x1}$ method to find the slope and also use y=mx+b method at the end.

ur y's are 0 and 21 and ur x's is 9 and 0

ur y intercept (which is ur b) equal 21

$\frac{0-21}{9-0}$=$\frac{-21}{9}$= $\frac{-7}{3}$=-2.3

this rlly doesnt make sense but hope this help