1. P.O.D. #12

2. Outcome
I can identify proportional and nonproportional linear relationships by finding a constant rate of change.

3. Definitions
Linear relationship – relationships that have straight-line graphs
Constant rate of change – when the rate of change between any two points in a linear relationship is the same or constant

4. Find the rate of change by:
Turn to the next clean page in your booklet and title it: (top half) Finding the Rate of Change in a Table
Find the rate of change by:
The change in y divided by the change in x
The first column of a table is usually the x and the second column is usually y (Sometimes they will mix them up just to trick you)(Ex. Page 172)
Almost always, time is x
Almost always, money is y

5. Find the rate of change by:
Turn to the next clean page in your booklet and title it: (bottom half) Finding the Rate of Change in a Graph
Find the rate of change by:
Make a table with the coordinates
Then, follow the table rules
If the graph’s line is straight and goes through the origin, then it is proportional. It must do both to be proportional.

6. Turn to Page 172

7. Page 172

8. Page 172

9. Page 173

10. Page 173

11. Page 174

12. Page 174

13. With Your 8:00 Appt
Complete page 175(1-9)

14. Homework
Complete page 177(14-19) or IXL I.1