Question
Which of these relations are functions?
Question content area bottom
Part 1
Select all that apply.
A.
(4,4), (5,6), (6,8), (6,10), (7,12)
B.
(6,9), (7,19), (8,29), (8,39), (9,49)
C.
(4,4), (5,4), (6,4), (7,4), (8,4)
D.
(7,33), (8,30), (9,27), (10,24), (11,21
Question content area bottom
Part 1
Select all that apply.
A.
(4,4), (5,6), (6,8), (6,10), (7,12)
B.
(6,9), (7,19), (8,29), (8,39), (9,49)
C.
(4,4), (5,4), (6,4), (7,4), (8,4)
D.
(7,33), (8,30), (9,27), (10,24), (11,21
Answers
GPT-5 mini
C and D.
Reason: In a function each first-coordinate (input) must appear only once. A has input 6 twice; B has input 8 twice. C and D have each input appearing exactly once.
Reason: In a function each first-coordinate (input) must appear only once. A has input 6 twice; B has input 8 twice. C and D have each input appearing exactly once.