Question 390648: Which of the following is NOT a function?
A. {(4,0), (0,-1), (2,0), (1,1), (3,0)}
B. {(1,3), (2,3), (3,6), (4,6), (5,8)}
C. {(3,1), (3,2), (6,3), (6,4), (8,5)}
D. {(6,4), (7,6), (8,4), (9,6), (5,4)}
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Which of the following is NOT a function?
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Look for 2 or more occurences of an x value with 2 different y values.
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A. {(4,0), (0,-1), (2,0), (1,1), (3,0)}
x's are all different so it is a function.
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B. {(1,3), (2,3), (3,6), (4,6), (5,8)}
x's are all different so it is a function.
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C. {(3,1), (3,2), (6,3), (6,4), (8,5)}
x = 3 is repeated and has 2 different y values
Not a function.
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D. {(6,4), (7,6), (8,4), (9,6), (5,4)}
x's are all different so it is a function.
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Cheers,
stan H.
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