Question
2 of 52 of 5 Items
Question
What is the value of the function y=18x−13
when x=−4
?(1 point)
Responses
−12.5
negative 12.5
−15
negative 15
−16
negative 16
−13.5
Answers
GPT-4o mini
To find the value of the function \( y = 18x - 13 \) when \( x = -4 \), we will substitute \(-4\) for \(x\):
\[
y = 18(-4) - 13
\]
Now calculate \( 18 \times -4 \):
\[
18 \times -4 = -72
\]
Next, substitute this back into the equation:
\[
y = -72 - 13
\]
Now, subtract \(13\) from \(-72\):
\[
y = -85
\]
So, the value of the function when \( x = -4 \) is \( -85 \). However, none of the options match this answer. Therefore, please check the options again or the original equation, as the provided options indicate different computations.
\[
y = 18(-4) - 13
\]
Now calculate \( 18 \times -4 \):
\[
18 \times -4 = -72
\]
Next, substitute this back into the equation:
\[
y = -72 - 13
\]
Now, subtract \(13\) from \(-72\):
\[
y = -85
\]
So, the value of the function when \( x = -4 \) is \( -85 \). However, none of the options match this answer. Therefore, please check the options again or the original equation, as the provided options indicate different computations.