Question

Is the following relation a function? Justify your answer.

Yes, because each output value has only one input value
Yes because each input value has only one output value
No, because there is an input value with more than one output value
No, because there is an output value with more than one input value

Answer 1

No, because there is an output value with more than one input value.

Explanation:

If you are using the same function equation, than you should not get the same output if you use two different inputs.