Question Rewrite the piecewise equation $y = \{\begin{array}{ll} \frac{1}{5}x + 8 & \text{if } x \leq -5\\ -x - 1 & \text{if } -4 \leq x < -2\\ -\frac{5}{4}x + 2 & \text{if } 0 \leq x \end{array}$. Find the domain and evaluate $f(a)$ for $a = -1, -4, -9, 8$.