Answer:
Option C is correct.
Step-by-step explanation:
Function is a Relation from set A to Set B whose every element of set A has one and only one image in Set B.
Option A).
(0,2) , (2,3) , (0,-2) , (4,1)
here 0 has two image 2 and -2.
So, this is not function.
Option B).
(1,2) , (1,-2) , (3,2) , (3,4)
here 1 has two image 2 and -2.
So, this is not function.
Option C).
(1,6) , (2,7) , (4,9) , (0,5)
Here every element has only one image.
So, this is a function.
Option D).
(2,4) , (0,2) , (2,-4) , (5,3)
here 2 has two image 4 and -4.
So, this is not function.
Therefore, Option C is correct.
