### Home > A2C > Chapter 1 > Lesson 1.1.2 > Problem 1-23

1-23.

Gerri made a function machine. Below are four pictures of her machine. (Note that these are all pictures of the same function machine.) Find the rule for Gerri’s function machine.

Make a table.

Notice that this is not a linear function because the rate of change is different between each pair.

Look for a pattern between all of the points. (Take a guess and then check.)