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Algebra 21 Online
OpenStudy (anonymous):

Which of the following expressions represents a function? y = x2 {(9, 2), (4, –2), (5, 3), (9, –4)} x = –3 x2 = 25 − y2

OpenStudy (welshfella):

what about the first one would the graph of x^2 pass the vertical line test?

OpenStudy (anonymous):

no?

OpenStudy (welshfella):

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