Mathematics, 16.07.2019 12:30 anna22684

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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Which of the following expressions represents a function? a. {(1,2), (4,-2), (8,3) , (9,-3)} b. y^...

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