Mccarthy John
08/11/2023 · Primary School
ind the domain and range of the relation. Also determine whether the relation is a function. \[ \{(-6,5),(2,-3),(-7,-7),(-3,-3)\} \]
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To find the domain and range of the relation \(\{(-6,5),(2,-3),(-7,-7),(-3,-3)\}\), we will identify the set of all first elements (inputs) and the set of all second elements (outputs) from the ordered pairs.
### Domain
The domain consists of the first elements of each ordered pair:
- From \((-6, 5)\), the first element is \(-6\).
- From \((2, -3)\), the first element is \(2\).
- From \((-7, -7)\), the first element is \(-7\).
- From \((-3, -3)\), the first element is \(-3\).
Thus, the domain is:
\[
\text{Domain} = \{-6, 2, -7, -3\}
\]
### Range
The range consists of the second elements of each ordered pair:
- From \((-6, 5)\), the second element is \(5\).
- From \((2, -3)\), the second element is \(-3\).
- From \((-7, -7)\), the second element is \(-7\).
- From \((-3, -3)\), the second element is \(-3\).
Thus, the range is:
\[
\text{Range} = \{5, -3, -7\}
\]
### Is it a Function?
A relation is a function if each input (first element) is associated with exactly one output (second element). In this case, we can check the first elements:
- \(-6\) maps to \(5\)
- \(2\) maps to \(-3\)
- \(-7\) maps to \(-7\)
- \(-3\) maps to \(-3\)
All first elements are unique, and each input has a single output. Therefore, the relation is a function.
### Summary
- **Domain**: \(\{-6, 2, -7, -3\}\)
- **Range**: \(\{5, -3, -7\}\)
- **Is it a function?**: Yes, it is a function.
Quick Answer
The domain is \(\{-6, 2, -7, -3\}\), the range is \(\{5, -3, -7\}\), and it is a function.
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