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

Question

when x=−4
?(1 point)
Responses

−16
negative 16

−13.5
negative 13.5

−15
negative 15

−12.5

Answer 1

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

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

Calculating \( 18(-4) \):

\[ 18(-4) = -72 \]

Now substituting that back into the equation:

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

Now, let's look at the options you provided:

• −16
• −13.5
• −15
• −12.5

None of these options match the correct value of \( y \) when \( x = -4 \). The correct value is \( -85 \). Please check the question and the options again!