What is the value of the function y=18x−13 when x=−4?(1 point) Responses −13.5 negative 13.5 −12.5 negative 12.5 −16 negative 16 −15 negative 15

Answer 1

To find the value of the function \( y = 18x - 13 \) when \( x = -4 \), we can substitute \( -4 \) into the equation:

\[ y = 18(-4) - 13 \]

Calculating \( 18(-4) \):

\[ 18 \times -4 = -72 \]

Now substitute that back into the equation:

\[ y = -72 - 13 \] \[ y = -85 \]

Thus, when \( x = -4 \), the value of \( y \) is \( -85 \).

However, since this result does not appear in the options provided, please ensure that the function or the value of \( x \) remains unchanged.