Question

Which of the following tables represents a function?

Answer 1

As their is no mention of test assuming it's not a test question

Solution

Now

As per definition of function

• Every domain has an unique range
• f(x)=y

Thing we have to see here is x values must not repeated more than once

In table 3

• It follows the defination

Table 3 is a function

Answer 2

The third table

Explanation:

It's the third table because each input does not repeat, so it means all of the inputs are unique

Repeating inputs (x) make it not a function