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14 votes
14 votes
Which set of ordered pairs represents a function?O {(6,8), (-4,2), (-7,4), (-7,8)}O {(0,9), (3,5), (0, -4), (6,2)}O {(6,0), (-7,2), (-4, -8), (9,2)}o {(-5,5), (0, -3),(-5, -2), (6,8)}

User Ahmad Ghoneim
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1 Answer

16 votes
16 votes

{(6,0), (-7,2), (-4, -8), (9,2)} option 3

A function can't have multiple x values (input values) with different output values (y values). To be a function it needs to have different x values.

Analyzing them we can see that

Is the only ordered pair that represents a function, is {(6,0), (-7,2), (-4, -8), (9,2)}

Because It doesn't have repeating x values with different y values like the other ordered pairs:

for example:

{(6,8), (-4,2), (-7,4), (-7,8)}

we can see that we have( -7 ,4) and (-7,8), a repeating x value (-7) with different outputs (4 and 8)

User Zhao Peng
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