To determine which mapping diagrams represent a function, you need to ensure that each input (or element from the domain) is associated with exactly one output (or element from the range). In other words, for every input, there cannot be more than one corresponding output.
If you have visual representations of the mapping diagrams to consider (Item 1, Item 2, Item 3, Item 4), you can identify the ones that represent functions by checking if any inputs map to multiple outputs.
Since I can't see the actual diagrams, I recommend following these guidelines:
- Look at each diagram and see how many outputs each input has.
- If any input has two or more outputs, that mapping does not represent a function.
- If all inputs only have one output, it is a valid function.
After applying these criteria, select the items that meet the definition of a function. If you have further questions or specific diagrams to describe, feel free to share, and I can assist you further!