Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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How do I sketch the function?
![### Piecewise Function and Its Graph
In this example, we are given a piecewise function \( f(x) \) defined as follows:
\[
f(x) =
\begin{cases}
-x - 6 & \text{if } x \leq -3 \\
-3 & \text{if } -3 < x \leq 4 \\
1.5 - 7 & \text{if } x > 4
\end{cases}
\]
We are required to sketch the graph of this piecewise function based on the given conditions.
### Analysis of Each Piece
1. **For \( x \leq -3 \):** The function is \( f(x) = -x - 6 \).
- This is a linear function with a negative slope.
- As \( x \) decreases, \( f(x) \) increases according to the equation.
2. **For \( -3 < x \leq 4 \):** The function is \( f(x) = -3 \).
- This is a constant function, meaning for all \( x \) in this interval, \( f(x) \) is always -3.
3. **For \( x > 4 \):** The function is \( f(x) = 1.5 - 7 \).
- This simplifies to \( f(x) = -5.5 \), indicating another constant function where \( f(x) \) is always -5.5 for \( x \) greater than 4.
### Graph Explanation
The provided graph paper has both horizontal and vertical axes marked with grid lines. Here's how to sketch the graph based on the piecewise function:
1. **For the interval \( x \leq -3 \):**
- Plot the line \( f(x) = -x - 6 \).
- For example, when \( x = -3 \), \( f(x) = -(-3) - 6 = 3 - 6 = -3 \).
- Extend the line with that slope to the left of \( x = -3 \).
2. **For the interval \( -3 < x \leq 4 \):**
- Draw a horizontal line at \( f(x) = -3 \)
- This extends from just greater than \( x = -3 \) to \( x = 4 \](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F51d45a60-639a-4786-9439-9ee8ed3be594%2F7f0a89c3-a6cf-4474-b859-415b90e8a974%2Fpw39wev_reoriented.jpeg&w=3840&q=75)
Transcribed Image Text:### Piecewise Function and Its Graph
In this example, we are given a piecewise function \( f(x) \) defined as follows:
\[
f(x) =
\begin{cases}
-x - 6 & \text{if } x \leq -3 \\
-3 & \text{if } -3 < x \leq 4 \\
1.5 - 7 & \text{if } x > 4
\end{cases}
\]
We are required to sketch the graph of this piecewise function based on the given conditions.
### Analysis of Each Piece
1. **For \( x \leq -3 \):** The function is \( f(x) = -x - 6 \).
- This is a linear function with a negative slope.
- As \( x \) decreases, \( f(x) \) increases according to the equation.
2. **For \( -3 < x \leq 4 \):** The function is \( f(x) = -3 \).
- This is a constant function, meaning for all \( x \) in this interval, \( f(x) \) is always -3.
3. **For \( x > 4 \):** The function is \( f(x) = 1.5 - 7 \).
- This simplifies to \( f(x) = -5.5 \), indicating another constant function where \( f(x) \) is always -5.5 for \( x \) greater than 4.
### Graph Explanation
The provided graph paper has both horizontal and vertical axes marked with grid lines. Here's how to sketch the graph based on the piecewise function:
1. **For the interval \( x \leq -3 \):**
- Plot the line \( f(x) = -x - 6 \).
- For example, when \( x = -3 \), \( f(x) = -(-3) - 6 = 3 - 6 = -3 \).
- Extend the line with that slope to the left of \( x = -3 \).
2. **For the interval \( -3 < x \leq 4 \):**
- Draw a horizontal line at \( f(x) = -3 \)
- This extends from just greater than \( x = -3 \) to \( x = 4 \
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