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Which relation is a function??

Which relation is a function??-example-1
User PhilHibbs
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you could set up the relation as a table of ordered pairs.then test to see if each element in the domain is matched with exactly one element in the range.if so, you have a function. so it would be pairs. hope it helps :)
User Thomas Jiang
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I'm pretty sure B. Is the function
User Imskull
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