maniyamcrae288p6o7pl maniyamcrae288p6o7pl

02-04-2019
Mathematics

contestada

Which relation is a function?

A. (3,4),(3,3),(1,2),(1,5)

B. (3,4),(2,4),(5,1),(3,5)

C. (1,3),(2,6),(3,9),(4,12)

D. (1,4),(1,3),(1,2),(1,1)

Respuesta :

altavistard altavistard

05-04-2019

Answer:

C

Step-by-step explanation:

Look for the case in which every input is unique (no repetitions).

A does not qualify, as 3 appears as an input twice.

B does not qualify, for the same reason

C qualifies (is a function), because all the inputs {1, 2, 3, 4} are unique.

D does not qualify (see A, above).

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