5.1 – Rate of Change Textbook pg. 294 Objective:

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5.1 – Rate of Change Textbook pg. 294 Objective: The student will find rates of change in order to analyze changes in tables and graphs.

Rate of change: compares changes in one variable to changes in the other Rate of change in dependent change in y ∆y Change change in independent change in x ∆x = = = 1) Find the rate of change between intervals. Between what years did the cost rise the most? Year 1985 1988 1990 1991 2004 Cost 22¢ 25¢ 25¢ 29¢ 37¢

2) Find the rate of change between each interval

3) Find the rate of change between each interval 3) Find the rate of change between each interval. Time 1 2 3 4 Distance 260 520 780 1040 *When rate of change is CONSTANT for ALL intervals, it is called SLOPE and means it is a LINEAR FUNCTION!

Name Date Period 5.1 – pg. half sheet