The graphs show the following functions: $$\begin{aligned} y \amp= -x^2\amp y \amp= -x^3\amp y \amp= x^4\amp y = x^5 \end{aligned}$$

1. Which graph shows $y = x^4\text{?}$ ? A B C D
2. Which graph shows $y = x^5\text{?}$ ? A B C D
3. Which graph shows $y = -x^2\text{?}$ ? A B C D
4. Which graph shows $y = -x^3\text{?}$ ? A B C D