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

when the input is −5
. (1 point)

1 answer

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

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

Calculating the right side:

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

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

  3. Finally, calculate the result: \[ y = 8 \]

Thus, the output when the input is \( -5 \) is \( \boxed{8} \).