If y = 8x − 2, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs? {(0, −2), (1, 6), (2, 14)} {(0, −2), (2, 13), (−5, −40)} {(1, 7), (2, 7), (3, 7)} {(1, 6), (2, 13), (3, 24)}

You just need to try with all of the pair f.ex
0,-2 -> put 0 in the x-> y=8*0-2=-2 so ok it is q possible pair of the function..
You try every pair till you find set where all the pairs fit
So set 1
1 and 6: 8*1-2=6 ok
2 and 14 : 8*2-2=14 ok
Hope I could help