What is the value of the function y=18x−13

Question

when x=−4
?(1 point)
Responses

−13.5
negative 13.5

−16
negative 16

−12.5
negative 12.5

−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 the multiplication first:

\[ y = -72 - 13 \]

Now, combine the terms:

\[ y = -85 \]

So, when \( x = -4 \), the value of the function \( y = 18x - 13 \) is \(-85\). However, since \(-85\) is not one of the given choices, please double-check the function statement or the value for \( x \) provided.