1. *Copy & paste this into “notes”*
Bellwork
*Copy & paste this into “notes”*
Evaluate f(x)= 5x-3 if x=4
b) Graph the following point on a graph. *Label Each*
W (1, 3)
X (-1, 0)
y (1/2, -4)
z (0, 4)

2. ANSWERS Solve for y: f(x)= 5x-3 for x=4 f(4)= 5(4)-3 f(4)=20-3 f(4)=17
b) Graph the following point on a graph. *Label Each*
(1, 3), (-1, 0), (1/2, -4), (0, 4)
ANSWERS
(0, 4)
(1, 3)
(-1, 0)
(1/2, -4)

3. Pg.277

4. VOCAB REVIEW Turn and discuss the following terms with your neighbor: 1.) domain:__________________ 2.) range:___________________ 3.) relation:__________________

5. Ch.4:2- Relations
What is a relationship?
In math a relation is a connection between a set of inputs and a set of outputs

6. Pg 278

7. Representations of Relations (other than equations)
Ordered pairs:
(-3, -2), (5, 0), (0, 1), (-1, 4), (4, 5), (2, -5)
2) Table: x -3 -1 2 4 5 y -2 1 -5

8. 3) Graph
(-3, -2)
(5, 0)
(0, 1)
(-1, 4)
(4, 5)
(2, -5)

9. 4) Mapping (-3, -2), (5, 0), (0, 1), (-1, 4), (4, 5), (2, -5) 2 4 5 -5 -2 1 4 5

10. 4) Mapping (More common way) (-3, -2), (5, 0), (0, 1), (-1, 4), (4, 5), (2, -5) 2 4 5 -5 -2 1 4 5

11. Domain and Range (-3, -2), (5, 0), (0, 1), (-1, 4), (4, 5), (2, -5)
Domain- All inputs (x values)
Range- All outputs (y values)
*remember an ordered pair is (x,y)*
(-3, -2), (5, 0), (0, 1), (-1, 4), (4, 5), (2, -5)
Domain: -3, 5, 0, -1, 4, -5
Range: -5, -2, 0, 1, 4, 5

12. Function
A function is a special kind of relation where every input goes to exactly one output. It’s PREDICTABLE!
*Can be written using Function Notation:

13. One-to-one
Every input has a unique output

14. *Function = Every input has one output
Domain?
Range?
Function?
*Function = Every input has one output

15. Domain?
Range?
Function?

16. Domain:__________ Range:___________

17. Pg. 279

19. Pg. 279

20. {(2,3), (3,4), (5,1), (6,2), (2,4)}
Domain?
Range?
Function?

21. {(2,6), (3,4), (5,1), (6,2), (3,3)}
Domain?
Range?
Function?

22. Domain?
Range?
Function?

23. Domain?
Range?
Function?

24. Tom is Driving from Missouri to Georgia and his speed varies between 0 mph and 75mph at various distances from his starting point.
Domain?
Range?
Function?

25. The number of employees a company had in each year from 2004 to 2009 were 25, 28, 34, 31, 27, and 29.

26. Pg. 280

28. Think-Pair-Share

29. Independent Practice pg. 281