Resposta :
a)f(x)= 3x +1
3x=-1
x=-1/3
y=0
b) (f)(x)=-3x + 1
3x=1
x=1/3
y=0
c) (f)(x)= 2x + 1
-2x=1
x=-1/2
y=0
3x=-1
x=-1/3
y=0
b) (f)(x)=-3x + 1
3x=1
x=1/3
y=0
c) (f)(x)= 2x + 1
-2x=1
x=-1/2
y=0