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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Use transformation, showing all work. Use interval notation. Problem attached
![**Graphing Transformed Functions**
In this activity, we will use transformations to graph the function and state the domain and range using interval notation.
The function we will be working with is:
\[ y = -\sqrt{x + 2} + 1 \]
**Steps and Transformations:**
1. **Base Function:**
- The basic function here is \( y = -\sqrt{x} \), which is a reflection of the square root function \( y = \sqrt{x} \) across the x-axis.
2. **Horizontal Shift:**
- The expression \( x + 2 \) indicates a horizontal shift to the left by 2 units. This transformation moves the graph of \( y = -\sqrt{x + 2} \).
3. **Vertical Shift:**
- The addition of \( +1 \) at the end of the function raises the graph vertically by 1 unit. So, we get \( y = -\sqrt{x + 2} + 1 \).
Using the transformations, we sketch the graph as follows:
**Graphs and Diagrams Explanation:**
- The coordinate plane is labeled with both x and y axes ranging from -5 to 5.
- The graph starts at \( (-2, 1) \) since at \( x = -2 \), \( \sqrt{0} = 0 \) and \( y = 1 \).
- As \( x \) increases, the function \( y = -\sqrt{x + 2} + 1 \) decreases because of the negative sign before the square root, reflecting the curve downward.
**Domain and Range:**
- The **domain** is the set of all x-values that can be input into the function. Since the inside of the square root \( x + 2 \) must be non-negative, the domain is:
\[
x \ge -2 \quad \text{or in interval notation:} \quad [-2, \infty)
\]
- The **range** is the set of all possible y-values of the function. Given the transformations applied:
- The highest point on the graph is at \( y = 1 \).
- As \( x \) increases, \( y \) will continue to decrease indefinitely. Hence, the range is:
\[
y \le 1 \quad \text{or in interval notation:} \quad (-](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F29666072-4841-4557-93a0-541aeee2aafd%2F2c117c0f-65e2-4268-93db-63e90b118f28%2Fqmh6thg_processed.png&w=3840&q=75)
Transcribed Image Text:**Graphing Transformed Functions**
In this activity, we will use transformations to graph the function and state the domain and range using interval notation.
The function we will be working with is:
\[ y = -\sqrt{x + 2} + 1 \]
**Steps and Transformations:**
1. **Base Function:**
- The basic function here is \( y = -\sqrt{x} \), which is a reflection of the square root function \( y = \sqrt{x} \) across the x-axis.
2. **Horizontal Shift:**
- The expression \( x + 2 \) indicates a horizontal shift to the left by 2 units. This transformation moves the graph of \( y = -\sqrt{x + 2} \).
3. **Vertical Shift:**
- The addition of \( +1 \) at the end of the function raises the graph vertically by 1 unit. So, we get \( y = -\sqrt{x + 2} + 1 \).
Using the transformations, we sketch the graph as follows:
**Graphs and Diagrams Explanation:**
- The coordinate plane is labeled with both x and y axes ranging from -5 to 5.
- The graph starts at \( (-2, 1) \) since at \( x = -2 \), \( \sqrt{0} = 0 \) and \( y = 1 \).
- As \( x \) increases, the function \( y = -\sqrt{x + 2} + 1 \) decreases because of the negative sign before the square root, reflecting the curve downward.
**Domain and Range:**
- The **domain** is the set of all x-values that can be input into the function. Since the inside of the square root \( x + 2 \) must be non-negative, the domain is:
\[
x \ge -2 \quad \text{or in interval notation:} \quad [-2, \infty)
\]
- The **range** is the set of all possible y-values of the function. Given the transformations applied:
- The highest point on the graph is at \( y = 1 \).
- As \( x \) increases, \( y \) will continue to decrease indefinitely. Hence, the range is:
\[
y \le 1 \quad \text{or in interval notation:} \quad (-
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