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Mathematics 17 Online
OpenStudy (anonymous):

(2,15),(15,-4),(-9,-7),(13,14) Is the relation a function? Explain. WILL GIVE MEDAL FOR CORRECT ANSWER!

OpenStudy (mertsj):

A function is a relation in which no two ordered pairs have the same first number.

OpenStudy (marissalovescats):

I'll make you a diagram. 1 certain X's cannot have more than 1 Y. But 1Y can have more than 1 X.

OpenStudy (marissalovescats):

|dw:1373326574406:dw| This one is not a function because 3 (the x) is going to more than one Y.

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