1. Day 19 Unit 1 review

2. Introduction
In this unit, we have discussed quite a number of concepts touching linear functions. In this session, we would like to briefly outline what has been covered and look at a few examples.

3. Vocabulary:
This can be done in the notebooks or on vocabulary cards. Whatever system you use 

4. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

5. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

6. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

7. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

8. Graphs of linear functions
Is a line showing the values of the dependent variable for various values of the independent variable?
We can draw a graph given a symbolic representation, a table or a word representation.
EXAMPLE 4
Dolmen deposits $200 every week in her bank account.
Use NEXT-NOW notation to write the function recursively
Write a function showing the amount deposited after some time.
Generate a table showing the total amount deposited after 8 weeks
This can be done in the notebooks or on vocabulary cards. Whatever system you use 

9. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

10. 1 2 3 4 5 6 7 8
200
400
600
800
1000
1200
1400
1600
This can be done in the notebooks or on vocabulary cards. Whatever system you use 

11. iii. Drawing the graph, we have
Number of weeks
200
400
600
800
1000
1200
Amount ($)
This can be done in the notebooks or on vocabulary cards. Whatever system you use 

12. Identification of functions
Functions are representations linking two collection of items called the input and the out where no one member of the input is linked to two or more member of the output.
EXAMPLE 5
Identify functions in the figure below.
(c)
(a)
(b)
This can be done in the notebooks or on vocabulary cards. Whatever system you use 

13. (f)
(e)
(d)
This can be done in the notebooks or on vocabulary cards. Whatever system you use 

14. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

15. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

16. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

17. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

18. 30 Volume (Gallons) 25 20 15 10 5 1 2 3 4 5 6 7 8 9 Time (minutes) 5 10 15 20 25 30
Time (minutes)
Volume (Gallons)
This can be done in the notebooks or on vocabulary cards. Whatever system you use 

19. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

20. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

21. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

22. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

23. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

24. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

25. This can be done in the notebooks or on vocabulary cards. Whatever system you use 

26. THE END