Question
Determine the \( x \) - and \( y \)-intercepts for the given function. Wr \[ q(x)=|x|-9 \] If there is more than one answer, separate your answers witl
Ask by Mcguire Lewis. in the United States
Jan 23,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
\( y \)-intercept: \( (0, -9) \), \( x \)-intercepts: \( (9, 0) \) and \( (-9, 0) \).
Solution
To find the \( x \)- and \( y \)-intercepts of the function \( q(x) = |x| - 9 \), follow these steps:
### \( y \)-Intercept
The \( y \)-intercept occurs where \( x = 0 \).
\[
q(0) = |0| - 9 = 0 - 9 = -9
\]
**\( y \)-Intercept:** \( (0, -9) \)
### \( x \)-Intercepts
The \( x \)-intercepts occur where \( q(x) = 0 \).
\[
|x| - 9 = 0 \\
|x| = 9
\]
This equation has two solutions:
\[
x = 9 \quad \text{and} \quad x = -9
\]
**\( x \)-Intercepts:** \( (9, 0) \), \( (-9, 0) \)
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**Summary:**
- **\( y \)-intercept:** \( (0, -9) \)
- **\( x \)-intercepts:** \( (9, 0) \), \( (-9, 0) \)
Reviewed and approved by the UpStudy tutoring team
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Extra Insights
To find the \( x \)-intercepts of the function \( q(x) = |x| - 9 \), set \( q(x) = 0 \) and solve for \( x \). This gives us: \[ |x| - 9 = 0 \implies |x| = 9 \] Thus, \( x = 9 \) and \( x = -9 \). Therefore, the \( x \)-intercepts are \( (9, 0) \) and \( (-9, 0) \). For the \( y \)-intercept, substitute \( x = 0 \) into the function: \[ q(0) = |0| - 9 = -9 \] Thus, the \( y \)-intercept is \( (0, -9) \). So, the intercepts you’re looking for are \( (9, 0) \), \( (-9, 0) \) for \( x \)-intercepts, and \( (0, -9) \) for the \( y \)-intercept.