Answer:
The correct answer is 2 . (1 , 3)
Step-by-step explanation:
A function is used to denote a particular relationship between variables. They can even be visualized as an input-output machine.
Every function has a domain set and a co-domain set. A function maps elements from domain to the elements of co-domain.
Here the domain can be considered as { 0 , 2 , 5 , 7}.
Here the co- domain can be considered as { 1 , 3, 8 , 2}.
For a function to be a valid function, all elements from the domain should have an image in the co- domain and every element of domain should have exactly one image in the co-domain.
Here the options 1 , 3 and 4 violate the second necessary criteria for the function to be valid.
Hence (1 , 3) is the correct answer.
