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Which of the following expressions represents a function? A) x^2 + y^2 = 9 B) {(4, 2), (4, –2), (9, 3), (9, –3)} C) x = 4 D) 2x + y = 5
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2 votes
Which of the following expressions represents a function?

A) x^2 + y^2 = 9
B) {(4, 2), (4, –2), (9, 3), (9, –3)}
C) x = 4
D) 2x + y = 5

User John Browne
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1 Answer

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The answer is either A or D. I will go with D...most probably.
User Pommy
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