1. 3 – Graphs of Inequalities (No Calculator)
Inequality Investigations
3 – Graphs of Inequalities (No Calculator)

2. Since (3, 400) creates a true statement, we shade that region.X
Since (3, 400) creates a true statement, we shade that region.
ANY point in the shaded region will be a solution to the inequality.
The solution is called a half-plane.

3. X
Since (2, 500) creates a false statement, we shade the opposite region.

4. X
Since the inequality does not include the actual line (> not >), we use a dotted line.