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Morgarella [4.7K]
3 years ago
10

The output of a function is 7 more than times 3 the input. find the input when the output is -8

Mathematics
1 answer:
Schach [20]3 years ago
8 0

Let the output = Y and the input = X.

The output (y) is 7 more than 3 times the input (x), which can be written as an equation:

Y = 3X+7

The out put is -8, so replace Y in the equation and solve for X:

-8 = 3X+7

Subtract 7 from each side:

-15 = 3X

Divide both sides by 3:

X = -15 / 3

X = -5

The input is -5

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