1. Grade Distribution 3rd 5th 8th A 7 3 B 5 4 2 C D 1 F 8 No Shows 100+
Range
54-94
44-99
44-93
Avg
78.96
73.41
72.21
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4.4 - Finding Slope

2. Test 2-2
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4.4 - Finding Slope

3. Slope Application
Chapter 3.4
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4.4 - Finding Slope

4. Review
What is the slope of these two points, (–1, 3) and (2, –2)? x y –1 3 2 –2
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4.4 - Finding Slope

5. Slope Equation Slope equation: Rewrite it as: 2/23/2019 5:05 AM
4.4 - Finding Slope

6. What is Slope? When do you see slope in real life? 2/23/2019 5:05 AM
4.4 - Finding Slope

7. Steps Read the question, TWICE Understand and TRANSLATE the QUESTION
SOLVE using Substitution or Elimination and label accordingly
CHECK answer
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4.4 - Finding Slope

8. Example 1
The table shows the population density for the state of Texas in various years. What is the average annual rate of change in the population density from 1990 to 2000? x y
1990
64.9
2000
79.6
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4.4 - Finding Slope

9. Example 2
The graph shows the annual coal exports from US miles in millions of short tons. What is the rate of change in coal exports in 2003 and 2004?
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4.4 - Finding Slope

10. Your Turn
The graph shows the annual coal exports from US miles in millions of short tons. How does the rate of change from 1998 and 1999 compare to 2002 and 2004?
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4.4 - Finding Slope

11. Example 3
The graph below shows the cost of gas and car wash in relation to gasoline. What is the rate of change from 2 gallons and 4 gallons? x y 2
8.52 4
14.04
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4.4 - Finding Slope

12. Example 4
The graph below shows the cost of gas and car wash in relation to gasoline. What is the rate of change from 2 gallons and 6 gallons? x y 2
8.52 6 20
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4.4 - Finding Slope

13. Your Turn
The graph below shows the cost of gas and car wash in relation to gasoline. What is the rate of change from 0 gallons and 4 gallons?
2/23/2019 5:05 AM
4.4 - Finding Slope