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9 October, 09:46

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?

Multiply the input by 2.

Multiply the input by - 2.

Multiply the input by - 1 and then subtract 3.

Multiply the input by - 1 and then add 2.

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  1. 9 October, 11:24
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    Input of 3 ... output of - 6 ... (3 * - 2 = - 6)

    input of - 2 ... output of 4 ... (-2 * - 2 = 4)

    input of 0 ... output of 0 ... (0 * - 2 = 0)

    function rule : multiply the input by - 2
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