Question

What is the value of the function y=18x−13
when x=−4
?

Answer 1

−12.5
negative 12.5

−13.5
negative 13.5

−16
negative 16

−15

Answer 2

these are the answers

Answer 3

To find the value of the function \( y = 18x - 13 \) when \( x = -4 \), we will substitute \(-4\) into the equation.

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

Calculating \( 18 \times -4 \):

\[
y = -72 - 13
\]

Now, subtract \( 13 \):

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

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

Answer 4

It seems like you've listed several negative numbers. If you need assistance or have a specific question about these numbers, please clarify or provide additional context. Are you asking for operations to be performed with these numbers, or is there something specific you would like to know?

Answer 5

Thank you for the clarification! If the answers you provided are potentially the results of evaluating the function \( y = 18x - 13 \) for different values of \( x \), we can check to see if any of these numbers correspond to \( y \) for specific values of \( x \).

Let's evaluate the function for several values of \( x \):

1. **For \( x = -4 \):**
\[
y = 18(-4) - 13 = -72 - 13 = -85
\]

2. **For \( x = -3 \):**
\[
y = 18(-3) - 13 = -54 - 13 = -67
\]

3. **For \( x = -2 \):**
\[
y = 18(-2) - 13 = -36 - 13 = -49
\]

4. **For \( x = -1 \):**
\[
y = 18(-1) - 13 = -18 - 13 = -31
\]

5. **For \( x = 0 \):**
\[
y = 18(0) - 13 = 0 - 13 = -13
\]

6. **For \( x = 1 \):**
\[
y = 18(1) - 13 = 18 - 13 = 5
\]

7. **For \( x = -0.5 \):**
\[
y = 18(-0.5) - 13 = -9 - 13 = -22
\]

Given the values you listed:
- \(-12.5\)
- \(-13.5\)
- \(-16\)
- \(-15\)

The closest evaluation we did is for \( x = 0 \), which gives \( y = -13 \).

If you have specific \( x \) values you'd like to check or if you have additional questions, please let me know!