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OpenStudy (njmcclure4):
Which of the following expressions represents a function? A. {(1,2), (4,-2), (8,3), (9,-3)} B. y^2=16-x^2 C. 2x^2+y^2=5 D. x=7
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OpenStudy (tkhunny):
Do you know the Vertical Line Test?
OpenStudy (njmcclure4):
Yes, so therefore D is not the answer
OpenStudy (tkhunny):
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