Question

Select Is a Function or is not a Function to correctly,classify each relation

Title
Is a Function
Is not a Function
{(3, 7),(3, 6), (5, 4),(4,7)}
{(1,5),(3,5),(4, 6),(6,4)}
{(2, 3),(4,2),(4, 6),(5, 8)}
{(0,4),(3, 2),(4, 2), (6,5)}

Answer 1

1) not a function

2)function

3)not a function

4)function