1. 5. f(n) = -2n – n for f(-3) and f(4)
Warm up
5. f(n) = -2n – n for f(-3) and f(4)

2. How do we find the domain and range of a function?
Math I Day 3 ( )
UNIT QUESTION: How do we graph functions, and what can be done to change the way they look?
Standard: MM1A1
Today’s Question:
How do we find the domain and range of a function?
Standard: MM1A1d

3. Domain and Range: Points
Find the domain and range of the following:
{(2, –3), (4, 6), (3, –1), (6, 6), (2, 3)}
domain:  {2, 3, 4, 6}
range:  {–3, –1, 3, 6}

4. Domain and Range: Notation
With continuous functions, we will use a notation called Set Notation using inequalities.
Examples:
x < 5
3 < x ≤ 9
Represented on the graph with a closed dot.
Represented on the graph with an open dot.

5. Domain and Range: Graph
Look horizontally: What x-values are contained in the graph? That’s your domain!
Look vertically: What y-values are contained in the graph? That’s your range!

6. Domain and Range: Graph

7. Domain and Range: Graph

8. Domain and Range: Graph

9. Homework: Domain and Range Practice