Question

On a certain function machine, an input of 3 has an output of -6. An input of -2 has an output of 4. An input of 0 has an output of 0. Which of the following phrases describes the function rule?

Answer 1

The function rule that describes this relationship appears to be "subtract 2 from the input to get the output." In mathematical notation, this can be represented as:

Output = Input - 2