1. RELATIONS Section 1.6

2. Coordinate Plane X- coordinate: represents horizontal placement Y-coordinate: represents vertical placement Origin: (0,0) Points: (x, y) = (rt/left, up/down)

3. Plot the following points: A (-4, 1) B (0, -5) C (-2, -3) D (5, -1) E (3, 0) F (2, 1)

4. Give the coordinates for the following points:

5. Relation A set of ordered pairs. Can be represented in several ways: Equation Graph Table Mapping

6. Illustrates how each element of the domain is paired with an element of the range. Domain: 1 st number in the ordered pair (x) Range: 2 nd number in the ordered pair (y) (-2, 1), (-1, 4), (3, 4), (2, 5 ) DomainRange -2 3 2 145145

7. Different representations of the same relation: Ordered PairsTable GraphMapping (4,1) (-2, 3) (-1,-2)

8. Different representations of the same relation: Ordered PairsTable GraphMapping

9. Different representations of the same relation: Ordered PairsTable GraphMapping

10. Different representations of the same relation: Ordered PairsTable GraphMapping -4 0 1 2 5 -2 2 4

11. Independent Variable The variable that determines the output In an ordered pair….it is the x variable (domain)

12. Dependent Variable The output variables – depend on the x variable In an ordered pair….it is the y variable (range)

13. Identify the independent & dependent variables: The dance committee is selling tickets to the Fall Ball. The more tickets that they sell, the greater the amount of money they can spend for decorations.

14. Identify the independent & dependent variables: Generally, the average price of going to the movies has steadily increased over time.

15. Identify the independent & dependent variables: The air pressure inside a tire increases with the temperature.

16. Identify the independent & dependent variables: As the amount of rain decreases, so does the water level of the river.

20. Describe what is happening:

27. Classwork Match the graphs with the correct story

28. Homework Worksheet