In a mapping diagram, an input or output is linked to its corresponding output or input using an arrow. In the mapping diagram above, the input 8 results in an output of 4, 0, or 2 1/4 for the relation shown. This indicates that the relation is not a function, as a single input (8) is associated with multiple outputs (4, 0, and 2 1/4). Each output value represents a different possible outcome for the same input value within the relation. Therefore, when analyzing the mapping diagram, it becomes clear that the relationship defined by these pairs does not adhere to the strict definition of a function, which requires that each input maps to exactly one output.
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I a mapping diagram, an input or output is mapped to it's corresponding input or output using an arrow. In the mapping diagram above, the input 8 results in an output of 4, 0, or 2 1/4 for the relation shown.
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