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Gerri made a function machine. Below are four pictures of her machine. What is the equation for Gerri’s function machine?

4 function machines, each with rule labeled, Gene's, with the following inputs and outputs: First. negative 1, & negative 1. Second 3, & 27. Third, negative 2, & negative 8. Fourth, 0, & 0.

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.)