How to identify and interpret the rate of chang

To identify the rate of change (or unit rate) I would usually look for a pattern in the table or graph. For example, if I got a problem like what is the unit rate for price per pound of potatoes and they gave me a chart like this:
Price. Potatoes

1. 3

2. 6

3. 9

I could determine that the unit rate (or rate of change) would be that for every $1 you could get 3 potatoes

I hope this helped! Have a wonderful day! :-)

The answer simplified would be. -6300x