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Find the output of the function y=−3x−7

when the input is −5
. (1 point)
The correct output is

1 answer

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

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

Calculating this step-by-step:

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

  2. Now substitute this result into the equation: \[ y = 15 - 7 \]

  3. Finally, subtract \( 7 \) from \( 15 \): \[ y = 8 \]

Thus, the correct output is \( 8 \).