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posted by fatima Sunday, September 16, 2012 at 2:45am.

Give an example of a function whose domain is {2,5,7} and whose range is {-1,0,3}?

how about y = (7/30)x^2 - (117/90)x + 2/3 , x ∈ {2,5,7} (test it, it works)

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