Order from least to 21 21 21 20 20 18 18 18 18 17

17,18,18,18,18,20,20,21,21,21,22

Step-by-step explanation:

least= smaller

greatest= bigger

Yes, it is definitely a function. Although one might say that it is not a one to one or injective function because of the presence of (-1,-2) and (6,-2).. The correct option among the two options that are given in the question is the second option. I hope that this is the answer that has actually come to your desired help.