Select Is a Function or Is not a Function to correctly classify each relation. {(2, 2),(4, 4),(6, 6),(8, 8)} is this function or not function
{(0, 3),(3, 5),(5, 6),(8, 4)} is this function or not function
{(1, 2),(3, 3),(4, 8),(6, 3)} is this function or not function
{(3, 4),(5, 2),(5, 6),(7, 3)} is this function or not function
Please help me I will give you the brain thing and extra points.