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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