Grade Distribution 3rd 5th 8th A 7 3 B C D 1 F 8 No Shows 100+

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Presentation transcript:

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 2/23/2019 5:05 AM 4.4 - Finding Slope

Test 2-2 2/23/2019 5:05 AM 4.4 - Finding Slope

Slope Application Chapter 3.4 2/23/2019 5:05 AM 4.4 - Finding Slope

Review What is the slope of these two points, (–1, 3) and (2, –2)? x y –1 3 2 –2 2/23/2019 5:05 AM 4.4 - Finding Slope

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

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

Steps Read the question, TWICE Understand and TRANSLATE the QUESTION SOLVE using Substitution or Elimination and label accordingly CHECK answer 2/23/2019 5:05 AM 4.4 - Finding Slope

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 2/23/2019 5:05 AM 4.4 - Finding Slope

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? 2/23/2019 5:05 AM 4.4 - Finding Slope

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? 2/23/2019 5:05 AM 4.4 - Finding Slope

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 2/23/2019 5:05 AM 4.4 - Finding Slope

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 2/23/2019 5:05 AM 4.4 - Finding Slope

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