Beyond the Basics

87. ${\begin{array}{l} x & \geq & 0 \\ y & \geq & 0 \\ y & \leq & \frac{- 2}{3} x + 2 \end{array}$ ${\begin{array}{l} x & \geq & 0 \\ y & \geq & 0 \\ y & \leq & \frac{- 2}{3} x + 2 \end{array}$
89. ${\begin{array}{l} x & \geq & - 1 \\ x & \leq & 3 \end{array}$ ${\begin{array}{l} x & \geq & - 1 \\ x & \leq & 3 \end{array}$
91. ${\begin{array}{l} x & \geq & 0 \\ y & \geq & 0 \\ y & \leq & - \frac{1}{2} x + 4 \\ y & \leq & - \frac{3}{2} x + 6 \end{array}$ ${\begin{array}{l} x & \geq & 0 \\ y & \geq & 0 \\ y & \leq & - \frac{1}{2} x + 4 \\ y & \leq & - \frac{3}{2} x + 6 \end{array}$
93. ${\begin{array}{l} x & \geq & 0 \\ y & \geq & x - 4 \\ y & \geq & - x + 6 \\ y & \leq & - x + 16 \end{array}$ ${\begin{array}{l} x & \geq & 0 \\ y & \geq & x - 4 \\ y & \geq & - x + 6 \\ y & \leq & - x + 16 \end{array}$
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Table of Contents for Beyond the Basics