A function is defined by f(x)=2x and f(x + y) = f(x) + f(y) is called

1.	A function is defined by f(x)=2x and f(x + y) = f(x) + f(y) is called _____________
A.	isomorphic
B.	homomorphic
C.	cyclic group
D.	heteromorphic
Answer» B. homomorphic

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