1. Warm-upAugust 28 Thursday Copy the question, draw the diagram and show your work in the box on your warm-up page. d What is the perimeter of the rectangle? What is the area of the rectangle? 3x - 2 5x - 4

2. Note #3 Number Classification and Interval Notation We will discuss number classification and how to use interval notations. I will write interval notations by looking at number lines.

3. Real Number System

4. Inequality Signs < less than > greater than > greater than or equal to < less than or equal to ≠ not equal to

5. #2 Interval Notation – Using ( ) and [ ] [ ] = () = + ∞ - ∞ U = Union

6. # Algebraic Notation Number LineInterval Notation 1 2 3 4

7. # Algebraic Notation Number LineInterval Notation 5 6 7 8

8. Exit ticket – Draw a number line and write the variable using the interval notation. 1)-3 ≤ x < 5 2)x < -2 OR x ≥ 3