b) A(x;-8) € G f
f(x)=3x+1
f(x)=-8
3x+1=-8
3x=-8-1
3x=-9 => x = -3 => A(-3;-8) => varianta corecta este D
c) A(x; 1/3) € G f
f(x)=4x+1
f(x)=1/3
4x+1=1/3
4x=1/3 - 1
4x= -2/3
x= -1/6 => A(-1/6;1/3) => varianta corecta este B
