asked 197k views
3 votes
Which of the following expressions represents a function?

x² + y² = 9
{(4,2), (4, -2), (9,3), (9, -3)}
x=4
2x + y = 5

asked
User Adebola
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1 Answer

5 votes

Answer:

the second one it is a function.

answered
User Kartika
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8.1k points

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