Is this relation a function? Justify your answer. 11
10
9
8
7
6
5
4
3
2
1
1 2 3 4 5 6 7 8 9 10 11
O A. No, because two points with the same y-value have different x-
values.
B. Yes, because every x- and y-value is positive.
C. No, because two points with the same x-value have different y
values.
O D. Yes, because the number of x-values is the same as the number of
yuvalues.