# How do you find the average rate of change of #f(t)= 2t + 7# from [1,2]?

##### 1 Answer

Jun 23, 2018

#### Explanation:

All you need to find is

Here's a "cheat": the rate of change for a line is constant--it's the slope. Thus the average rate of change on any interval where your function is a line should always result in the slope.

Here, we get