Which relation is a function?

  1. (1, 2), (1, 3), (2, 4)
  2. (1, 2), (2, 3), (3, 3)
  3. (2, 1), (2, 2), (3, 3)
  4. (0, 0), (0, 1)
Answer

B) (1, 2), (2, 3), (3, 3)

A function pairs each first element with exactly one second element; the correct one never repeats an x with different y values. SLO M-09-A-16 · Application

Mathematics MCQ · More Sets and Functions MCQs · Practise