what is the domain and range

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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what is the domain and range

### Determining Functions and Their Domains and Ranges

#### Instructions:
Decide whether the relation defined by the graph to the right defines a function, and give the domain and range.

**Question:**
Does the graphed relation define a function?
- ⭘ No
- ⭉ Yes

**Question:**
What is the domain of the graphed relation?
[Enter your answer in the space provided, using interval notation.]

#### Explanation of the Graph:
The graph provided is a standard Cartesian plane with a blue line plotted, extending from the upper left quadrant to the lower right quadrant. This line passes through coordinate points such as (-10, 10), (0, 0), and (10, -10). The line suggests a continuous linear relationship.

##### Characteristics:
- **X-axis range:** -10 to 10
- **Y-axis range:** -10 to 10

### Answer Key:
- The graphed relation **does** define a function because for every x-value, there is a unique y-value. This is indicated by the line passing the Vertical Line Test (any vertical line drawn would intersect the graph at only one point).
- The domain of the graphed relation, considering the infinite expansion of the line in both directions, is all real numbers, represented in interval notation as \( (-\infty, \infty) \).
  
**Note:** Users should type their answers in interval notation.
Transcribed Image Text:### Determining Functions and Their Domains and Ranges #### Instructions: Decide whether the relation defined by the graph to the right defines a function, and give the domain and range. **Question:** Does the graphed relation define a function? - ⭘ No - ⭉ Yes **Question:** What is the domain of the graphed relation? [Enter your answer in the space provided, using interval notation.] #### Explanation of the Graph: The graph provided is a standard Cartesian plane with a blue line plotted, extending from the upper left quadrant to the lower right quadrant. This line passes through coordinate points such as (-10, 10), (0, 0), and (10, -10). The line suggests a continuous linear relationship. ##### Characteristics: - **X-axis range:** -10 to 10 - **Y-axis range:** -10 to 10 ### Answer Key: - The graphed relation **does** define a function because for every x-value, there is a unique y-value. This is indicated by the line passing the Vertical Line Test (any vertical line drawn would intersect the graph at only one point). - The domain of the graphed relation, considering the infinite expansion of the line in both directions, is all real numbers, represented in interval notation as \( (-\infty, \infty) \). **Note:** Users should type their answers in interval notation.
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