Question

Which relation is a function?

I. {(2, 4), (-1, 7), (3, 0), (5, 4)}
II. {(-3, 6), (-3, 6), (8, 6), (8, 10)}
III. {(4, 1), (-2, 5), (-8, 3), (4, 6)}
(Points : 1)
I only

II only

I and II

II and III

Answer 1

I only :)

Answer 2

functions have all different domains, or x-values, so if the x values repeat its not a function.

Answer 3

2. Which relation is not a function?

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http://takeexam.next.ecollege.com/ec/pub/K12Content/Courses/resources/swfs/media/Ninth_Grade/Math/Unit19165/Lesson73018/HS_AL2_S1_03_L203_Q2_D.gif