Question

Which of the following relations represent a function?

{(-1,-3),(3,2),(3,7)}
{(-1,4),(2,7),(3,7)}
{(-3,7),(3,-7),(3,7)}
{(-1,4),(-1,7),(3,5)}

Answer 1

B
You can only use the same value for x once

Answer 2

Answer: B is correct

Step-by-step explanation: