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Warm Up

Warm Up. Problem of the Day. Lesson Presentation. Lesson Quizzes. Warm Up Use the table for problems 1 and 2. 1. In which week did Alicia save the most? 2. How much did Alicia save in all?. week 3. $25. Problem of the Day

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Warm Up

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  1. Warm Up Problem of the Day Lesson Presentation Lesson Quizzes

  2. Warm Up Use the table for problems 1 and 2. 1. In which week did Alicia save the most? 2. How much did Alicia save in all? week 3 $25

  3. Problem of the Day A health club charges $100 to join and $25 per month. There is also an $8 fee per aerobic class. Julia joins the health club for 4 months and takes 12 aerobic classes. What is her total cost? $296

  4. Learn to interpret information given in a graph and to make a graph to model a situation.

  5. Speed Speed Time Time Additional Example 1A: Matching Situations to Graphs The graphs show the speeds of two cars over time. Tell which graph corresponds to each situation. Graph 2Graph 3 Mr. Lee is traveling on the highway. He pulls over, stops, then accelerates rapidly as he gets back on the highway. Graph 2

  6. Speed Speed Time Time Additional Example 1B: Matching Situations to Graphs The graphs show the speeds of two cars over time. Tell which graph corresponds to each situation. Graph 1Graph 2 Ms. Montoni slows down as she leaves the main road. She continues to slow down as she turns onto other streets and eventually stops in front of her house. Graph 1

  7. Runner’s Speed Runner’s Speed Runner’s Speed Time Time Time Check It Out: Example 1A Tell which graph corresponds to the situation described below. Graph 2 Graph 1 Graph 3 Jamie begins the race, and soon feels a pain in a muscle. He is unable to complete the race. Graph 2—Jamie is unable to complete the race, so his speed decreases to zero.

  8. Runner’s Speed Runner’s Speed Runner’s Speed Time Time Time Check It Out: Example 1B Tell which graph corresponds to the situation described below. Graph 2 Graph 1 Graph 3 Melissa builds up her speed during the beginning of the race. She maintains her running speed for the remainder of the race. Graph 1—Melissa’s speed increases at the beginning and then the graph remains constant.

  9. Time 8:00 8:30 12:00 12:30 Temp.(F) 71 71 82 74 Additional Example 2A: Creating a Graph of a Situation Create a graph for the situation. Tell whether the graph is continuous or discrete. The table shows the temperature inside a car over time. Car Temperature Since every value of time has a corresponding altitude, connect the points. Temp (F)‏ The graph is continuous. Time

  10. Cost($)‏ Pumpkins Purchased Additional Example 2B: Creating a Graph of a Situation Create a graph for the situation. Tell whether the graph is continuous or discrete. A market sells pumpkins for $5 each. Pumpkin Cost The cost (y-axis) increases by $5 for each pumpkin purchased (x-axis). Because each person can only buy whole pumpkins or none at all, the graph is distinct points. The graph is discrete.

  11. Time 8:00 10:00 12:00 2:00 Distance (mi) 280 320 500 580 Distance (mi)‏ Time Check It Out: Example 2A Create a graph for the situation. Tell whether the graph is continuous or discrete. The table shows the distance traveled during a family vacation. Distance Travelled Since every value of time has a corresponding altitude, connect the points. The graph is continuous.

  12. Cost($)‏ T-shirts Purchased Check It Out: Example 2B Create a graph for the situation. Tell whether the graph is continuous or discrete. A business sells t-shirts for $10 each. T-Shirt Cost The cost (y-axis) increases by $10 for each t-shirt purchased (x-axis). Because each person can only buy one t-shirt or none at all, the graph is distinct points. The graph is discrete.

  13. Lesson Quizzes Standard Lesson Quiz Lesson Quiz for Student Response Systems

  14. Speed Speed Time Time Lesson Quiz Tell which graph corresponds to the situation. Then tell whether the graph is continuous or discrete. A bus pulls out from the gas station. It drives to its first stop. Then the bus gets on the expressway. Graph A Graph B Graph B; continuous

  15. Lesson Quiz for Student Response Systems 1. Maggi has $25 in her bank account. She gets $5 every day from her father and deposits the money in the account for the first three days. On the fourth day, she buys a hat for herself with the money. Identify the table that corresponds to this situation. • B.

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