Question

For which value of x is therelation not a function?{(3, 1), (x, 0),(9,5),(12, 6)}A) 1. B)3C) 8. D)6

Answer 1

A function is a relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output.

Here the domain of the relation is {3,x,9,5}.

The given relation is a function only if x not takes any of the value 3, 9 or 5.

So, option B is correct.