Let f(x) be a function with the two properties: (a) for any two real numbers x and y, f(x+y) = x + f(y), and (b) f(0) = 2.

What is the value of f(1998)?

2000
1996
2
1998

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$f(1998) = f(1998 + 0) = 1998 + f(0) = 1998 + 2 = \boxed{2000}$