1. DO NOW: Pick up worksheet on lab desk, read the directions and plot the data to form a line graph. How do you graph a change? #hrs Studying vs. Student Test Grade

2. Objective: How can Graphic Relationships be used to describe change? Handout: Types of Graphs and Graphic Relationship Organizer On back of Do Now.

3. Direct Relationship: As one variable increases, the other ____________. Graphic Example:

4. Examples

5. Indirect (inverse) Relationship: As one variable increases, the other __________________ Graphic Example:

6. Examples

7. Cyclic Relationship: As one variable increases, the other __________ Events that are cyclic are also ___________________ Graphic Example:

8. Examples

9. No Relationship: As one variable increases, the other __________________ Graphic Example:

10. Examples

11. State in words the relationship between relief and the average rate of erosion as shown in the graph. DIRECT

12. State in words the relationship between air temperature and relative humidity. INDIRECT

13. Handout: Line Graphs Worksheets Fill in the relationships on both sides of the handout.Line Graphs Worksheetshandout.

14. Line Graphs Worksheets: Page 3 Page 4

15. Rate of Change = change in field value time Measures how fast something changes (SPEED).

16. 1. Which line has the GREATEST RATE of CHANGE (STEEPEST)? Line A 2. Which line increased most RAPIDLY? Line A it is steeper = faster

17. Examples: A Car travels at a rate (speed) of 60 miles per hour. Sally traveled 60 miles over a 2 hour period. What was Sally’s rate of travel? Rate of Change = 60 miles = 2 hours 60 miles/hour : Sally’s Rate of Travel ( speed ) is 60 mph.

18. 1.Jo is very sick. She woke up with a temperature of 100°Fahrenheit. 1 hour later her temperature was 102°Fahrenheit. Calculate her rate of temperature change. 2.On an African Safari you track the movement of a Lion between the hours of 2pm and 5pm. During this time period the Lion traveled a total distance of 60km. Calculate the Lion’s rate of movement (speed). Rate = 102°F - 100° F = 2°F = 2°F/hour 1 hour1hour Rate = 60km = 60km = 20km/hour 5pm-2pm 3hours

19. How do you round your answer 0.1234 to… a. to the nearest tenth b. to the nearest hundredth c.to the nearest thousandth one decimal place two decimal places three decimal places Example: 0.1 Example: 0.12 Example: 0.123

21. Rate of change handoutp1Rate of change handoutp1 & page2page2