3 years ago

Nine times the input minus seven is equal to the output. If the input is -1, what is the output?

1 answer:

7 0

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$f(x) = 9x - 7$

$f( - 1) = 9( - 1) - 7$

$f( - 1) = - 9 - 7$

$f( - 1) = - 16$

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