1. Topic: Graphing the Changing Environment
Seasons
Time
Day/Night

2. Graphs

4. Parts of a Graph -

5. Y Axis – Dependent Variable -
Origin
X Axis – Independent Variable -

6. Setting up a graph Relationship between hours worked and pay
Independent Variable –
Working Hours
Dependent Variable –
Pay
Do visual aid on the board comparing hours and pay

7. Graphing – Hours worked & Paycheck
When hours worked is high, pay is high 28 21
Pay (dollars)
Direct Relationship 14 7
When hours worked is low pay is low 1 2 3 4
Time Worked (hours)

8. Direct Relationship -

9. Inverse or Indirect Relationship
-  -
Y Axis
Density
Temperature
X Axis

10. Cyclic (Cycle) Relationship-
High
Tides
Low
Time (hours)

11. Constant – No change-Static
Mass
Travel from the Earth to the Moon

12. DO NOT PICK – NOT POSSIBLE
Non-Sense Graph
DO NOT PICK – NOT POSSIBLE

13. Rate of Change -
Rate of Change = Change in Field Value
Change in Time

14. Graphing – Hours worked & Paycheck
What is the rate of change between these two points? 28 21
Pay (dollars) 14 7 1 2 3 4
Time Worked (hours)

15. Example (28 – 7) Dollars 21 Dollars (4-1) Hours 3 Hours

16. Example D What is the rate of change from point A to point B
Number of Cell Phone Users
What is the rate of change from point A to point B C B A
Years (1986 = 1)

17. Example (A-B) (3000–1000) Users 2000 Users (4-2) Years 2 Years

18. Example D Number of Cell Phone Users
What is the rate of change from point B to point C C B A
Years (1986 = 1)

19. Example (B-C) (14,000–3,000) Users 11,000 Users (7-4) Years 3 Years

20. Example (C-D)
What is the rate of change between Points C and D?

21. Extrapolation -
Y Axis
Density
Temperature
X Axis

22. Interpolation -
Y Axis
Density
Temperature
X Axis

23. Equilibrium -
Dynamic

24. Dynamic Equilibrium -

25. Example – Oceans are constantly evaporating, why is the ocean level remaining constant?

26. Name that Relationship
Y Axis -
X Axis

27. Name that Relationship
Y Axis -
X Axis

28. Name the relationship
The relationship between the amount you practice and your skill level
The temperature change during a year
The change in a person’s weight as they travel from the Earth to space. - - -

29. FQ
Draw a graph showing the relationship between time studying and grade on a test