Which relations are functions?
Select Yes or No for each relation:
Relations
(2, 2), (3, 3), (4, 4), (5, 5)
(1, 2), (1, 3), (1, 4), (1, 5)
(2, 1), (3, 1), (4, 1), (5, 1)
(2, 2), (2, 3), (5, 4), (5, 5)

Respuesta :

no
no
yes 
no 


i think im right but idk

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