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

when x=−4
?(1 point)
Responses

1 answer

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

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

Now calculate \(18 \times -4\):

\[ y = -72 - 13 \]

Next, subtract \(13\) from \(-72\):

\[ y = -85 \]

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