Question 49869
f(x) 0 1 -1 2
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x 2 3 3 4 
A) state the domain
Domain is the set {2,3,4}

B) state the range
Range is the set {-1,0,1,2}

C) determine whether f(x) is a function
f is not a function because f(3)=1 and f(3)=-1
This contradicts the definition of a function.

cheers,
Stan H.