Date: _____________ Block:
6.3: Domain & Range
Domain and range describe the values for x and y that are appropriate on a graph.
Domain - Set of all possible values for the independent variable in a relation.
Think: What values can ‘x’ be?
Range - Set of all possible values for the dependent variable in a relation.
Think: What values can ‘y’ be?
Let’s begin with a number line:
[pic] [pic]
Ex. 1: Determine the domain and range from a graph.
|[pic] |Domain |Range |
| |In words: |In words: |
| |The domain is the set of all real numbers between -6 |The range is the set of all real numbers between |
| |and +5. |-8 and +8. |
| |On a number line: |On a number line: |
| | | |
| | | |
| | | |
| |Set notation: |Set notation: |
| | | |
| | | |
| |Interval notation: |Interval notation: |
| | | |
| | | |
Domain Range
List:
Interval notation:
Set notation:
Domain Range
In words:
Interval notation:
Set notation:
Practice questions on Domain and Range:
1) Worksheet: Domain and Range
2) Extra: Page 301 to 304: # 1 to 6, 12
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