Algebra II
posted by anonymous .
Which of the following is a relation but not a function a)( 10,1)(1,8)(4, 2) b) (4, 1)(1,1)(2,2) c) (5,1)(1, 7)(21, 2) d) none of these?

a
b)
c)
all map x to a definite outcome, they are all functions
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