Posted by Naoko on Saturday, March 21, 2009 at 6:18pm.
input x  1, 0, 1, 2
output y  3, 4, 3, 0
In that order, is y a function of x?
I'm pretty sure it is, but I'm not entirely sure how to explain why.
Thank you!

Math  Jo, Saturday, March 21, 2009 at 6:21pm
yes
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