1. Interval notation

2. [ ] a square bracket when we want to ___________ the end value, or
In "Interval Notation" we just write the beginning and ending numbers of the interval, and use:
[ ] a square bracket when we want to ___________  the end value, or
Square brackets are like __________ 
( ) a round bracket when we __________ 
Round brackets are like __________ 
include
≥ and ≤
DON’T
< and >

3. Examples
(5 , 12] means from 5 to 12, do not include 5, but does include 12
[6 , 10] means from 6 to 10, include 6 and does include
Now you try:
Come up with an example on your own

4.  (a, +∞) 
 __________ means x > a "greater than a“
__________ means x ≥ a "greater than or equal to a“
__________ means x < a "less than a“
__________ means x ≤ a "less than or equal to a"
[a, +∞) 
(-∞, a) 
(-∞, a] 

5. [0, 6) 

6. (-5, 2] 

7. [-5, 7] 

8. [-2, -1) 

9. (3, 7]

10. [ 2, 9 ]

14. Kahoot Time

15. Domain and Range Worksheet
left
right X
Bottom
top Y

16. (- ∞ , ∞ )
[-3, 3]
[-2, ∞)
[-3, 3]