Question

In your own words, explain how to find the rate of change of the following graph at x=1. Then find the rate of change at x=1.

Answer 1

see below

Explanation:

The rate of change is

f(x2) - f(x1)

------------------

x2-x1

Since this is a line we can pick any two points on the line, one befre x=1 and one after x=1

Let x=0 and x=2

f(2) - f(0)

-------------

2-0

4-2

-------

2

2/2

1

The rate of change is 1