Question

Write Function or Not

1.{(1,3),(2,4),(3,5)}
2.{(1,2),(1,3),(2,4)}
3.{(-3,4),(0,7),(3,0)}
4.{(4,3),(4,0),(-3,0)}
5.{(6,-8,),(-6,-8),(-6,8)​}

Answer 1

1. is a function

2.is a function

3. is function

4 is not function

5. is not function

Explanation: