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Which of the sets of ordered pairs represents a function? A = {(−4, 5), (1, −1), (2, −2), (2, 3)} B = {(2, 2), (3, −2), (9, 3), (9, −3)} 1. Only A 2. Only B 3. Both A and B 4. Neither A nor B
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Jun 4, 2017
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Which of the sets of ordered pairs represents a function?
A = {(−4, 5), (1, −1), (2, −2), (2, 3)}
B = {(2, 2), (3, −2), (9, 3), (9, −3)}
1. Only A
2. Only B
3. Both A and B
4. Neither A nor B
Mathematics
high-school
Luc VdV
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Luc VdV
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A function WILL NOT have any repeating x values. They can have repeating y values, just not the x ones. So just look at the x values.
so look at x values in A.....are there any repeating x values ? Yes there is....there are repeating 2's...therefore, A is not a function.
now look at the x values in B...are there any repeating x values ? yes there is....there are repeating 9's....so B is not a function.
so neither A or B are functions
Jeetendra Pujari
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Jun 10, 2017
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Jeetendra Pujari
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