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9-92.

Identify which of the relationships shown below is not a function. Explain your reasoning. Homework Help ✎

A relationship is a function only if there is no more than one -value for each -value. Check the -values in both tables to see to find any that appear multiple times. When you find a value for that appears multiple times, check the corresponding -values. If the -values are different, then the relationship is not a function.

Relationship (b) is not a function. When equals , can equal or .