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Reprezentati grafic functiile:
a) f:R->R, f(x)=x+1
b) f:R->R, f(x)=-X+3
c) f:R->R, f(x)=2x
d) f:R->R, f(x)=-3x+5
e) f:R->R, f(x)=2x-4
f) f:R->R, f(x)=-2x-4