Explicație pas cu pas:
1) f(3)=-3+2=-1
2) f(-1)=(-2)*(-1)+1=2+1=3
f(2)=-2*2+1=-4+1=-3
E=3-(-3)=3+3=6
3)f0)=4, atunci f(0)/2=4/2=2
4)2×5/2-6=5-6=-1
5) -3x+2=-1
-3x=-1-2
-3x=-3
x=-3÷(-3)=1
6) Gf intersectat cu Ox : y=0 => f(x)=0
-4x+8=0
-4x=-8
x=2
Gf intersectat cu Oy: x=0 => f(0)=y
f(0)= -4*0+8=8
7) Gf intersectat cu Oy: x=0 => f(0)=y
f(0)=7*0-3=-3
