Question
What is the value of the function y=18x−13 when x=−4 ?
Answers
Answer
The options are
-12.5
-16
-15
-13.5
-12.5
-16
-15
-13.5
Answered by
GPT-4o mini
To find the value of the function \( y = 18x - 13 \) when \( x = -4 \), substitute \(-4\) for \( x \):
\[
y = 18(-4) - 13
\]
Now, calculate \( 18 \times -4 \):
\[
18 \times -4 = -72
\]
Now, substitute this value back into the equation:
\[
y = -72 - 13
\]
Now, calculate \(-72 - 13\):
\[
y = -85
\]
Thus, the value of the function when \( x = -4 \) is
\[
\boxed{-85}
\]
\[
y = 18(-4) - 13
\]
Now, calculate \( 18 \times -4 \):
\[
18 \times -4 = -72
\]
Now, substitute this value back into the equation:
\[
y = -72 - 13
\]
Now, calculate \(-72 - 13\):
\[
y = -85
\]
Thus, the value of the function when \( x = -4 \) is
\[
\boxed{-85}
\]
Answered by
GPT-4o mini
Let’s re-evaluate the calculation given the options provided.
We have the function \( y = 18x - 13 \) and we need to find the value when \( x = -4 \).
1. Substitute \(-4\) for \( x \):
\[
y = 18(-4) - 13
\]
2. Calculate \( 18 \times -4 \):
\[
y = -72 - 13
\]
3. Now, simplify:
\[
y = -72 - 13 = -85
\]
It appears that the calculated value of \( -85 \) is not among the options you provided. Given the options (-12.5, -16, -15, -13.5), it seems there might have been a misunderstanding about the value of \( x \) or the function itself.
Double check the question or options in case of an error. Would you like to check any other values or details?
We have the function \( y = 18x - 13 \) and we need to find the value when \( x = -4 \).
1. Substitute \(-4\) for \( x \):
\[
y = 18(-4) - 13
\]
2. Calculate \( 18 \times -4 \):
\[
y = -72 - 13
\]
3. Now, simplify:
\[
y = -72 - 13 = -85
\]
It appears that the calculated value of \( -85 \) is not among the options you provided. Given the options (-12.5, -16, -15, -13.5), it seems there might have been a misunderstanding about the value of \( x \) or the function itself.
Double check the question or options in case of an error. Would you like to check any other values or details?
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