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

`m=-(1)/(3)`

Explanation:

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

`m=\frac{\text{change in y}}{change\text{ in x}}=(y_2-y_1)/(x_2-x_1)`

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

`m=(1-5)/(21-9)=(-4)/(12)=-(1)/(3)`