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Keith_Richards [23]

3 years ago

13

If the output of the equation f(x)=3x+7 is -2 what is the input and how do you solve it?

1 answer:

Kisachek [45]3 years ago

5 0

-2 = 3x + 7

subtract 7 from both sides

-9 = 3x

divide by 3

-3 = x

check

-2 = 3 (-3) + 7

-2 = -9 + 7

-2 = -2

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