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The mapping diagram shows that each element in Set A (the input) is connected to one or more elements in Set B (the output). 

A relation is a function if **each input is associated with exactly one output**. If any input is associated with more than one output, the relation does **not** represent a function.

Looking at the diagram:
- The input \(-4\) is connected to both \(0\) and \(2\).
- The input \(5\) is connected to both \(-1\) and \(1\).

Since there are inputs with multiple outputs, this **does not represent a function**.

Hence, the correct answer is:
- "The mapping diagram above **does NOT represent** a function since **for each number** in Set A (the input) there are **multiple mappings** to Set B (the output)."

Would you like further details on how to identify functions?

Here are 5 related questions for better understanding:
1. What defines a function in terms of mapping?
2. How can you quickly check if a mapping diagram represents a function?
3. What would happen if a function had the same output for different inputs?
4. Can you have a function where every input points to the same output?
5. How does the vertical line test relate to mapping diagrams?

**Tip**: Always remember that in a function, no single input can be assigned to more than one output!

The mapping diagram above does NOT represent a function since for each number in Set A (the input) there are multiple mappings to Set B (the output).

Learn how to identify whether a mapping diagram represents a function. This example shows a mapping where multiple outputs are assigned to single inputs, explaining why it does not represent a function. Suitable for Grades 6-8.

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