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20points! Plz help

Select which relations are functions

20points! Plz help Select which relations are functions-example-1
User Dirk Huber
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1 Answer

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A function is a process or a relation that associates each element x of a set X, the domain of the function, to a single element y of another set Y .

First graph: YES

Second graph: NOT (for x = 4 are two values of y)

Third graph: NOT (for x = 2 are two values of y)

Fourth graph: YES

20points! Plz help Select which relations are functions-example-1
User Esmin
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