Identifying functions from relations

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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### Identifying Functions from Relations

#### Relation 1

- **Domain**: pen, lake, paper, rock
- **Range**: 1, 3

*Diagram Explanation*: 
- "pen" maps to 1
- "lake" maps to 3
- "paper" maps to 3
- "rock" maps to 1

**Options**:
- Function
- Not a function

#### Relation 2

- **Domain**: 3, 1, -1, 4
- **Range**: 8, 6, -3, 7, -7

*Diagram Explanation*: 
- "3" maps to 8
- "3" maps to 6
- "3" maps to -3
- "3" maps to 7
- "3" maps to -7

**Options**:
- Function
- Not a function

#### Relation 3

- **Set of Ordered Pairs**: \(\{(t, g), (d, z), (g, z), (z, t)\}\)

**Options**:
- Function
- Not a function

#### Relation 4

- **Set of Ordered Pairs**: \(\{(-4, s), (9, j), (-4, m), (-4, n)\}\)

**Options**:
- Function
- Not a function

For each relation, decide whether it is a function or not by checking if each element in the domain maps to exactly one element in the range.
Transcribed Image Text:### Identifying Functions from Relations #### Relation 1 - **Domain**: pen, lake, paper, rock - **Range**: 1, 3 *Diagram Explanation*: - "pen" maps to 1 - "lake" maps to 3 - "paper" maps to 3 - "rock" maps to 1 **Options**: - Function - Not a function #### Relation 2 - **Domain**: 3, 1, -1, 4 - **Range**: 8, 6, -3, 7, -7 *Diagram Explanation*: - "3" maps to 8 - "3" maps to 6 - "3" maps to -3 - "3" maps to 7 - "3" maps to -7 **Options**: - Function - Not a function #### Relation 3 - **Set of Ordered Pairs**: \(\{(t, g), (d, z), (g, z), (z, t)\}\) **Options**: - Function - Not a function #### Relation 4 - **Set of Ordered Pairs**: \(\{(-4, s), (9, j), (-4, m), (-4, n)\}\) **Options**: - Function - Not a function For each relation, decide whether it is a function or not by checking if each element in the domain maps to exactly one element in the range.
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