1. FUNCTIONS 1.7-1.8

2. FUNCTIONS DOMAIN: THE INPUT VALUES FOR A RELATION. USUALLY X INDEPENDENT VARIABLE RANGE: THE OUTPUT VALUES FOR A RELATION. USUALLY Y DEPENDENT VARIABLE FUNCTION: A RELATION IN WHICH EVERY ELEMENT IN THE DOMAIN IS MAPPED TO EXACTLY ONE ELEMENT IN THE RANGE. ***EVERY INPUT HAS EXACTLY ONE OUTPUT

3. EXAMPLE 1 IDENTIFY THE DOMAIN AND RANGE FOR THE FOLLOWING RELATION THE TABLE SHOWS THE COST OF VARIOUS AMOUNTS OF GAS AT THE SAME PUMP

4. EXAMPLE 2 IDENTIFY THE DOMAIN AND RANGE FOR THE FOLLOWING RELATION. IS IT A FUNCTION? CREATE A MAPPING DIAGRAM:

5. EXAMPLE 2 DO EACH OF THE FOLLOWING REPRESENT A FUNCTION? WHY OR WHY NOT?

6. EXAMPLE 3 WRITE A RULE FOR THE FUNCTION SHOWN: ***FIND A PATTERN

7. EXAMPLE 4 x y

8. x y

9. x y

11. HOMEWORK PP. 44-45: 3-7 ODD, 15-21 ODD, 25 P. 52: 3-7 ODD, 10, 12 P. 56: 1, 3, 4-6 ALL