1. Warm Up
The graph below represents Kim’s distance from home one day as she rode her bike to meet friends and to do a couple of errands for her mom before returning home.
1. Use the graph to describe Kim’s journey.
2. What do the horizontal lines on the graph represent?

2. Walking, Falling, & Making Money
Essential Questions: What is the purpose of using the rate of change to analyze real-world data? For what types of real-world data can you find the rate of change? Why might you find the rate of change?
Standard: Calculate and interpret the average rate of change of a function over a specified interval. Estimate the rate of change from a graph.

3. Star Vocabulary Words 1.speed- 2.constant speed- 3.average speed-
4.rate of change-
5.average rate of change-
6.constant rate of change-

4. VOCABULARY Speed – distance traveled per unit of time
Constant Speed – speed is not increasing or decreasing, but remains the same over time.
Average Speed – distance traveled in a given amount of time, which may vary from one point to another.

5. VOCABULARY
Rate of Change – compares two different quantities that are changing.
Average Rate of Change – the change in the out value of a quantity divided by the change of input value.
Constant Rate of Change – a rate change that stays the same

6. TIME 1 2 3 4 5 6 7 8 9 10
DWAIN 12 16 20 24 28 32 36 40
BETH 15 25 30 35

9. Homework Assignment
Utah Book “Jack & Jill” page