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f(1) = a(1) +b = 0
= a +b = 0
f(0) = a(0) +b = -2
= b = -2
a +b = 0
a +(-2) = 0
a = 2
Jadi, rumus fungsi f(x) adalah =
f(x) = 2x +(-2).
0=a+b
-2=b
0=a+b
0=a-2
A=2
Jadi fungsi f(x)=2x-2