# Points, Vectors, and Functions

### Example 1

Write inequalities for *r* and θ describing the given region.

- PICTURE polar ineqs 6 without pink

### Example 2

Write inequalities for *r* and θ describing the given region.

- PICTURE polar ineqs 7

### Example 3

Write inequalities for *r* and θ describing the given region.

- PICTURE polar ineqs 8

### Example 4

Sketch the region described by the given inequalities.

- $π ≤ θ ≤ \frac{3π}{2}$

### Example 5

Sketch the region described by the given inequalities.

- r < 4

### Example 6

Sketch the region described by the given inequalities.

- \frac{11π}{6}≤ θ ≤ 2π and 2≤ r ≤ 5