f(x)= ax+b
f(1)=0-------->0=a+b
f(0)=-2------>-2=b
Subtitusi b=-2 ke a+b=0
a+b=0
a+(-2)=0
a-2=0
a=2
f(x)=ax+b
=2x+(-2)
=2x-2
Jawabannya B
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f(x)= ax+b
f(1)=0-------->0=a+b
f(0)=-2------>-2=b
Subtitusi b=-2 ke a+b=0
a+b=0
a+(-2)=0
a-2=0
a=2
f(x)=ax+b
=2x+(-2)
=2x-2
Jawabannya B