Question 676182
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Examine the set of x-coordinates.  If they are all different, then the relation is a function.  If any of them are the same, compare the y-coordinates of the particular ordered pairs where the x-coordinates are equal.  If the y-coordinates in those ordered pairs are also equal, then you still have a function, but if you have any ordered pairs where the x-coordinates are equal but the y-coordinates are different, then you do NOT have a function.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
<font face="Math1" size="+2">Egw to Beta kai to Sigma</font>
My calculator said it, I believe it, that settles it
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