Question

what is the slope of the line that passes through the points (9,5) and (21,1)? Write your answer in simplest form. undefined

Answer 1

Answer:

$m=-\frac{1}{3}$

Step-by-step explanation:

The slope of a line is represented by the following equation:

$m=\frac{\text{change in y}}{change\text{ in x}}=\frac{y_2-y_1}{x_2-x_1}$

Given points are (9,5) and (21,1), then its slope:

$m=\frac{1-5}{21-9}=\frac{-4}{12}=-\frac{1}{3}$