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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. Homework Help ✎

gerri's function machines

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.)