What is the definition of function

Also called multiple-value function. a relation between two sets in which two or more elements of the second set are assigned to each element of the first set, as y2 = x2, which assigns to every x the two values y = +x and y = −x.

Function means an activity or purpose natural to or intended for a person or thing. hope this helps

where is the graph? need more info

●yes, this statement is absolutely apt.

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