The rate of change is
![The rate of change is class=](https://us-static.z-dn.net/files/dbb/2c6bad702caa0ba148bf87ef7a2b6e8a.png)
==============================================================
Explanation:
Pick any two rows from the table to plug into the slope formula.
I'll pick the rows where every value is positive (rows 3 and 4)
Using the slope formula, we get the following:
m = (y2-y1)/(x2-x1)
m = (1-5)/(2-1)
m = -4/1
m = -4 is the slope and it's the rate of change
For any linear function, the slope and rate of change are the same thing.