Question

a line goes throught the points (0,-9) and (-9,-72)

what is the slope of the line?

Answer 1

To find the slope(m) of the line, you use the slope formula:

$m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

And you plug in the points into the equation.

$m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$m = \frac{-72-(-9)}{-9-0}$

$m = \frac{-72+9}{-9-0}$

$m = \frac{-63}{-9}$

m = 7

Answer 2

y= -9-72

y=0x-9-72

m=0

hope this helped