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3 years ago

Using the equation y = 2x + 5, what would the input need to be for an output of -15? A : -25 B : -35 C : -10 D : -5

Mathematics

1 answer:

Igoryamba3 years ago

6 0

Answer: C: -10

Step-by-step explanation:

An output is another word for y. If we set y to -15, we can solve for x, or the input variable.

$-15=2x+5$

Subtract 5 from both sides of the equation.

$-20=2x\\$

Divide both sides of the equation by 2.

$-10=x$

Therefore, x = -10.

Hope this helps!

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