A= 1,2,3 , B= 2,5,8 ; f(x)=3 x-1, x A. Is this a function? - Vidyadip

Question

$A=\{1,2,3\}, B=\{2,5,8\} ; f(x)=3 x-1, x \in A$. Is this a function?

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Answer

$f(x)=3 x-1$ is a function.

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