WILL GIVE BRAINLIEST TO 1st ANSWER PLEASE HELP!



Which set of pairs is linear and non-linear


1. (2,1), (3,4), (5,6), (2, 7)


2 (3,1), (−3, 1), (0,1), (5,1)


3 (1,1), (2,2), (3,3), (4,4)


4. (4,1), (6, 7), (8, 9), (4,7)


(2,4), (2,5), (2,6), (2,8)