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Lesson Menu. Main Idea and New Vocabulary Example 1: Identify Functions Using Tables Example 2: Identify Functions Using Tables Example 3: Real-World Example: Linear and Nonlinear Functions Example 4: Real-World Example: Linear and Nonlinear Functions.

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  1. Lesson Menu Main Idea and New Vocabulary Example 1: Identify Functions Using Tables Example 2: Identify Functions Using Tables Example 3: Real-World Example: Linear and Nonlinear Functions Example 4: Real-World Example: Linear and Nonlinear Functions

  2. Determine whether a function is linear or nonlinear. • nonlinear function Main Idea/Vocabulary

  3. Identify Functions Using Tables Determine whether the table represents a linear or nonlinear function. Explain. As x increases by 2, y increases by a greater amount each time. The rate of change is not constant, so this function is nonlinear. Example 1

  4. Identify Functions Using Tables Answer:The function is nonlinear. Check Graph the points on a coordinate plane. The points do not fall in a line. The function is nonlinear.  Example 1

  5. Determine whether the table represents a linear or nonlinear function. Explain. A.Linear; the rate of change is not constant. B.Linear; the rate of change is constant. C.Nonlinear; the rate of change is not constant. D.Nonlinear; the rate of change is constant. Example 1 CYP

  6. Identify Functions Using Tables Determine whether the table represents a linear or nonlinear function. Explain. As x increases by 3, y increases by 9 each time. The rate of change is constant, so this function is linear. Example 2

  7. Identify Functions Using Tables Answer:The function is linear. Check Graph the points on a coordinate plane. The points fall in a line. The function is linear.  Example 2

  8. Determine whether the table represents a linear or nonlinear function. Explain. A.Linear; the rate of change is constant. As x increases by 1, y increases by 4. B.Linear; the rate of change is constant. As x increases by 2, y increases by 12. C.Linear; the rate of change is constant. As x increases by 3, y increases by 16. D.Nonlinear; the rate of change is not constant. Example 2 CYP

  9. Linear and Nonlinear Functions CLOCKSUse the table below to determine whether or not the number of revolutions per hour of a second hand on a clock is a linear function of the number of hours that pass. Example 3

  10. Linear and Nonlinear Functions Examine the differences between the number of second hand revolutions each hour. 120 – 60 = 60 180 – 120 = 60240 – 180 = 60 300 – 240 = 60 The difference in second hand revolutions is the same. As the number of hours increases by 1, the number of second hand revolutions increases by 60. Therefore, this function is linear. Answer:The function is linear. Example 3

  11. Linear and Nonlinear Functions Check Graph the data to verify the ordered pairs lie on a straight line. Example 3

  12. GEOMETRYUse the table below to determine whether or not the perimeter of a square is a linear function of the length of its side. A.Linear; the rate of change is constant.As the length of the sideincreases by 1, the perimeter increases by 4. B.Linear; the rate of change is constant.As the length of the sideincreases by 1, the perimeter increases by 6. C.Linear; rate of change is constant. As the length of the sideincreases by 4, the perimeter increases by 1. D.Nonlinear; the rate of change is not constant. As the length of the sideincreases by 4, the perimeter increases by a greater amount each time. Example 3 CYP

  13. Linear and Nonlinear Functions MAZEAt the first level of a maze, there are three possible paths that can be chosen. At the next level, each of those three paths have three more possible paths. Does this situation represent a linear or nonlinear function? Explain. Make a table to show the number of possible paths starting with Level 1. Example 4

  14. Linear and Nonlinear Functions Graph the function. The data do not lie on a straight line. Answer:This function is nonlinear. Example 4

  15. MONEYDiante puts $10 in his savings account. The next month he doubles the amount and puts $20 in his account. The third month he double the amount again and puts $40 in his account. Does this situation represent a linear or a nonlinear function? Explain. A.Linear; the data lie on a straight line. B.Linear; the data do not lie on a straight line. C.Nonlinear; the data lie on a straight line. D.Nonlinear; the data do not lie on a straight line. Example 4 CYP

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