Functions Practice

Question

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Question
Find the output of the function y=−3x−7
when the input is −5
. (1 point)
The correct output is

Answer 1

To find the output of the function \( y = -3x - 7 \) when the input is \( x = -5 \), we can substitute \(-5\) for \(x\) in the equation.

\[ y = -3(-5) - 7 \]

Calculating this step by step:

1. Multiply \(-3\) by \(-5\): \[ -3 \times -5 = 15 \]

2. Now, substitute that value back into the equation: \[ y = 15 - 7 \]

3. Finally, perform the subtraction: \[ y = 8 \]

The correct output is \( 8 \).