Verified answer

QUESTION :

• Which of the following statements is true?

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CHOICES :

• A. Every function is a relation.
• B. Every relation is a function.
• C. Not all functions are relations.
• D. All functions are not relations.

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ANSWER :

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WHY / HOW?

• All functions are relations, though not all relations are functions. Somehow by contrast, in a relation, there can be any number of lists that agree on all but the last element.

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