SOLUTION: Which of the following relations is a function?
A.
(1, 4), (-2, 2), (9, 1), (-6, 2)
B.
(9, 1), (-2, 4), (1, 1), (9, 2)
C.
(1, 0), (-2, 3), (9, 1), (-2, 5)
D
Algebra.Com
Question 1100088: Which of the following relations is a function?
A.
(1, 4), (-2, 2), (9, 1), (-6, 2)
B.
(9, 1), (-2, 4), (1, 1), (9, 2)
C.
(1, 0), (-2, 3), (9, 1), (-2, 5)
D.
(1, 4), (-2, 6), (1, 3), (-6, 2)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
A function can't have two y values for the same x.
Therefore, if x is different in each group it is a function
BCD all have two with the same x (9, -2, 1 respectively)
Therefore, A is a function. No x has two y values.
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