1. **Stating the problem:**
We need to find the solution region for the system of inequalities:
(a) \(x + y \geq 4\)
\(2x - y < 6\)
2. **Step 1: Graph the first inequality \(x + y \geq 4\)**
- Rewrite as \(y \geq 4 - x\).
- Find intercepts:
- When \(x=0\), \(y=4\) gives point \((0,4)\).
- When \(y=0\), \(x=4\) gives point \((4,0)\).
- Draw the line through \((0,4)\) and \((4,0)\).
- Since inequality is \(\geq\), shade the region above or on the line.
3. **Step 2: Graph the second inequality \(2x - y < 6\)**
- Rewrite as \(y > 2x - 6\).
- Find intercepts:
- When \(x=0\), \(y > -6\) (point \((0,-6)\)).
- When \(y=0\), solve \(2x = 6\) gives \(x=3\) (point \((3,0)\)).
- Draw the line \(y = 2x - 6\) through \((0,-6)\) and \((3,0)\).
- Since inequality is strict \(<\), the line is dashed.
- Shade the region above the line (because \(y > 2x - 6\)).
4. **Step 3: Find the feasible region**
- The solution is the intersection of the shaded regions from steps 2 and 3.
5. **Summary:**
- The feasible region is the area on or above the line \(x + y = 4\) and strictly above the line \(y = 2x - 6\).
Linear Inequalities 850F76
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