SOLUTION: if f = {(2,5), (3,6),(4,-2), (a,b)} is a function. Which of the following could be (a,b)?

Algebra ->  Functions -> SOLUTION: if f = {(2,5), (3,6),(4,-2), (a,b)} is a function. Which of the following could be (a,b)?      Log On


   

Question 710677: if f = {(2,5), (3,6),(4,-2), (a,b)} is a function. Which of the following could be (a,b)?
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
A function never uses the same first coordinate twice. Therefore
"a" could not be 2,3, or 4, for they have already been used as first coordinates. So choose whichever choice does not have 2,3, or 4 for "a".