2.5 - Quadratic Rate of Change - Deer Valley Unified School District

2.5 Average Rate of Change Quadratic Functions Algebra 3-4

1. Find the average rate of change Where x = 1 and x = 2

Name ________________________ Period ______

Where x = 2 and x = 5

Which is greater? 2. Find the average rate of change Where x = 0 and x = 1

3. Find the average rate of change Where x = 3 and x = 5

4. Find the average rate of change for x2 + 3x + 2 Where x = 1 to x = 3

y x

5. Find the average rate of change for x2 + 12x + 36 Where x = 0 to x = 4

6. Find the average rate of change for x2 -11x + 30 Where x = 0 to x = 4

7. Find the average rate of change for x2 - 9x - 22 Where x = 0 to x = 4

y x

y x

y x

8. Sally went on a bike trip and stopped regularly at half-hour intervals. At each break she recorded her total

Stops Time (h)

1st

0.5

2nd 1

Distance (km) 7 15

distance since leaving home. a. What was Sally's average speed, in km/h, during the first half-hour? During the last half hour?

3rd 1.5

21

4th

2

24

5th 2.5

28

6th

3

36

b. Between which 2 consecutive stops did Sally average the lowest speed?

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