1. Functions in Algebra Pg

2. Do Now
What are the coordinates of the blue point? Which point is in Quadrant 2? Which point is closest to the origin?

3. Coordinate Plane BattleShip!

4. Vocabulary
Relation – A relation is a general term for any set of ordered pairs.
Function – A function is a special type of relation in which each member of the domain is paired with exactly one member of the range.
Domain – The domain is the set of all x- coordinates in a set of ordered pairs.
Range – The range is the set of all y- coordinates in a set of ordered pairs.

5. Vocabulary (cont.) Synonyms for Domain: Synonyms for Range: x-values
Input
Independent Variable
Synonyms for Range:
y-values
Output
Dependent Variable

6. Class Example 1
The following set of ordered pairs has a limited number of points.
Ex:{(2,3),(-1,0),(2,-5),(0,-3)}
Domain:
Range:
*If a number occurs more than once, you do not need to list it more than one time.
**Numbers must be listed in numerical order.

7. Class Example 2 Identify the Domain of the Table.4 -3 9 81 1
Domain: {-3, 0, 1, 2, 9}
* Domain is all the x-values listed in order.
Identify the Range of the Table.
Range: {0, 1, 4, 9, 81}
* Range is all the y-values listed in order.

8. Class Example 3 Identify the Domain of the Map.
* Domain is all the values the arrow starts at listed in order.
Identify the Range of the Map.
Range: {-2, 4, 5, 9}
* Range is all the values the arrows point at listed in order.

9. Class Example 4 Create a mapping to represent the following relation.
(9, 3), (2, -1), (6, 0), (4, -1)

10. Student Example 1 Identify the Domain of the Table.6 -1 18 5 4 -7
Domain: {-7, -1, 1, 4, 5}
Identify the Range of the Table.
Range: {-1, 1, 6, 18}

11. Student Example 2 Identify the Domain of the Map.
Identify the Range of the Map.
Range: {-3, 1, 3, 4}

12. Student Example 3
Create a mapping to represent the following relation.
(0, -3), (-2, -1), (6, 0), (0, -1)