smc

If you find the intersections of the curves listed in the answers $\text{(A)}$, $\text{(B)}$, $\text{(D)}$, and $\text{(E)}$, you will find that their abscissas are $0$ and $2$. Also you can note that the curves in $\text{(C)}$ don't actually intersect. Therefore the answer is $\boxed{y=x,y=x-2}$.