Question
Determine whether the relation is a function. Give the domain and range for the relation. \( \{(-4,-4),(-6,-6),(-1,-1),(8,8)\} \) Does the given relation represent a function? Yes No
Ask by Matthews Paul. in the United States
Feb 03,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
Yes, the relation is a function. The domain is \(\{-6, -4, -1, 8\}\) and the range is \(\{-6, -4, -1, 8\}\).
Solution
Yes, the given relation represents a **function**.
### Explanation:
A **function** is a relation in which each input (first element of the ordered pair) is associated with exactly one output (second element of the ordered pair).
Let's examine the given relation:
\[
\{\, (-4, -4),\ (-6, -6),\ (-1, -1),\ (8, 8) \,\}
\]
- **Inputs (Domain Candidates):** -4, -6, -1, 8
- **Outputs (Range Candidates):** -4, -6, -1, 8
Each input is **unique** and maps to one output only:
- -4 maps to -4
- -6 maps to -6
- -1 maps to -1
- 8 maps to 8
Since there are no repeated inputs with different outputs, the relation satisfies the definition of a function.
### Domain and Range:
- **Domain:** \(\{-6,\ -4,\ -1,\ 8\}\)
*(The set of all input values.)*
- **Range:** \(\{-6,\ -4,\ -1,\ 8\}\)
*(The set of all output values.)*
### Conclusion:
- **Does the given relation represent a function?**
**Yes**
Reviewed and approved by the UpStudy tutoring team
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Bonus Knowledge
In this case, the relation consists of pairs where each input (the first element in each pair) maps to exactly one output (the second element). The inputs here are -4, -6, -1, and 8, and all are unique. Therefore, the relation is indeed a function! The domain of this relation (the set of all first elements) is \(\{-4, -6, -1, 8\}\) and the range (the set of all second elements) is also \(\{-4, -6, -1, 8\}\).