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**Lesson Objective: I can… **

Lesson Topic: From Ratio Tables, Equations, and Double Number Line Diagrams to Plots on the Coordinate Plane Lesson Objective: I can… Associate with each ratio A:B the ordered pair (A, B) and plot it in the X-Y coordinate plan. Represent ratios in the ratio table, equations, and double number line diagrams then on a coordinate plane.

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**Leaving Morganstown, WV**

Classwork: Complete the table, create a double number line, and develop and equation. Kelli is traveling by train with her soccer team from Yonkers, NY to Morganstown, WV for a tournament. The distance between Yonkers and Morganstown is 400 miles. The total trip is hours. The train schedule is provided below: Leaving Yonkers, NY Destination Distance Allenstown, PA 100 miles Carlisle, PA 200 miles Berkely Springs, WV Morganstown, WV Leaving Morganstown, WV Destination Distance Berkely Springs, WV Carlisle, PA 200 miles Allenstown, PA Yonkers, NY 400 miles

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Exercise 1: Create a table to show the time it will take Kelli and her team to travel from Yonkers to each town listed in the schedule assuming that the ratio of the amount of time traveled to the distance traveled is the same for each city. Then, extend the table to include the cumulative time it will take to reach each destination on the ride home.

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Exercise 2: Create a double number line diagram to show the time it will take Kelli and her team to travel from Yonkers to each town listed in the schedule. Then, extend the double number line diagram to include the cumulative time it will take to reach each destination on the ride home. Represent the ratio of the distance traveled on the round trip to the amount of time taken with an equation.

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Example 1: Dinner service starts once the train is 250 miles away from Yonkers. What is the minimum time the team will have to wait before they can have their meal? We will use the table to graph this on a coordinate plane.

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Example 2: Dominic works on the weekends and on vacations from school mowing lawns in his neighborhood. For every lawn he mows, he charges $12. Complete the table. Then determine ordered pairs, and create a labeled graph.

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Lesson Summary: A ratio table, equation, or double number line diagram can be used to create ordered pairs. These ordered pairs can then be graphed on a coordinate plane as a representation of the ratio. Rate your learning: 1 – 2 – 3 - 4

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By graphing Heather Greene Grand Canyon University TEC 542 June 1, 2011.

By graphing Heather Greene Grand Canyon University TEC 542 June 1, 2011.

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