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Mathematics 15 Online
OpenStudy (anonymous):

true or false? the set ordered pairs below is a function. {(3,4), (3,6), (5,14), (7,14)}

jimthompson5910 (jim_thompson5910):

Notice how x maps to both 4 and 6 at the same time. So it's NOT a function.

jimthompson5910 (jim_thompson5910):

A function has each x mapping to only one y value.

OpenStudy (anonymous):

(fails "the vertical line test")

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