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Unit 3 Collecting and Graphing Data for Linear and Quadratic Relations LG: I can determine whether a set of data represents a linear or quadratic relationship by graphing and calculating differences in y-values

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Calculating Differences xyFirst Differences Second Differences 02 13 210 329 466 y2 –y1 (subtract upper y value from lower y value)

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Group Work! Examine 2 different scenarios Gather data for each Graph and calculate first and second differences Main Idea: Explain how you can determine whether data is linear or quadratic by: – Looking at the graph and – Looking at differences in y-values

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Homework Complete handout “Distance-Time”

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