Question

What is the slope of the line connecting the points (2, 1) and (4, 5)?

Answer 1

`2`

Explanation:

1. Find the difference between the two y values. 5 − 1 = 4

This is usually called the "rise" of the line.

2. Find the difference between the two x values. 4 − 2 = 2

This is usually called the "run" of the line.

3. Divide the rise buy the run:
`(rise)/(run) = slope (4)/(2) = 2`

Answer 2

2

use y2 - y1 / x2 - x1

5 - 1 / 4 - 2 = 4/2 = 2