Which of the following could NOT possibly be true for a function?
A. Domain is {2}, Range is {2}
B. Domain is {2, 3}, Range is {2}
C. Domain is {2}, Range is {2, 3}
D. Domain is {2, 3}, Range is {2, 3}

Question

Which of the following could NOT possibly be true for a function?
 A. Domain is {2}, Range is {2}
 B. Domain is {2, 3}, Range is {2}
 C. Domain is {2}, Range is {2, 3}
 D. Domain is {2, 3}, Range is {2, 3}

anonymous · Answer

For a relation to be a function, a single value of x (domain) CANNOT be mapped to more than one value of y (range).

anonymous · Answer

Sorry if i get this wrong but i now believe it is A and wondering if that is correct

anonymous · Answer

Incorrect. A is a function as it maps the 2 from the domain to the single value 2 of the range.

anonymous · Answer

C.. right?

anonymous · Answer

@amanda_wiwi  If you think it is C, explain why, so that @Cassidy510  can analyze your answer.

anonymous · Answer

thank you

anonymous · Answer

@ananda_wiwi , if you think it is C, explain why, so that @Cassidy510  can aalyze your reasoning.

anonymous · Answer

Well, the domain cannot have more than one number for range, right? A) has one answer for domain, and one for range. But C has one for domain, and two for range, which you previously stated was not allowed. Correct? Range and domain were never my best.

anonymous · Answer

@ananda_wiwi  You are correct. In choice C, there is one value of x and that is being mapped to TWO values of y. That is not a function.

anonymous · Answer

okay i understand now thank you everyone for your help

anonymous · Answer

Sure.

anonymous · Answer

No problem, hun. God bless you guys! c: