1. Ways to show a function Four ways to display/write a function
Ordered pairs
Mapping diagram
Table
Graph

2. Function or No Function?
Yes, each member of the domain is assigned
To exactly one member of the range

3. Function or No Function?
No, the number 4 is assigned to 2 numbers in the range
(1 & 3)

4. Function or No Function?
Yes, each member of the domain is assigned
To exactly one member of the range

5. Function or No Function?
This is a MAPPING DIAGRAM!
Yes, each member of the domain is assigned
To exactly one member of the range

6. Function or No Function?
No, the number 4 is assigned to 2 different numbers in the range (6 & 7)

7. Function or No Function?
No, does not pass the vertical line test. This means that numbers of the domain are assigned to more than one value in the range

8. Evaluate a) f(-3) = 11 b) f(6) = -16 c) g(-4) = -36 d) g(7) = -102
e) f(a) = -3a+2