Function or Not a Function
Domain and Range
Function Notaion
Vocabulary
100
True or False-A relation is a set of ordered pairs
What is TRUE?
100
State the domain and range:
| x | y |
| 3 | 7 |
| 5 | 9 |
| 3 | 8 |
D: {3, 5} R: {7, 8, 9}
100
Evaluate f(x)=-3x if x=2
What is -6?
100
What is the definition of domain?
A set of input values (all values of x).
200
Is it a function? {(2, 3), (4, 5), ( -2, 6)}
What is YES because the domain does not repeat?
200
State the domain and range: 
D: {1, 2, 3, 4, 5, 6}
R: {-1, 0, 1, 2, 3, 6}
200
Evaluate f(x)=2x+1 if x=-2
What is -3?
200
What is the definition of range?
The set of output values (all values of y).
300
Using the vertical line test does the graph of the points (1,3) and (1,5) represent a function?
What is False, the points fail the vertical line test
300
State the domain and range: 
D: (-∞, -4]
R: All real numbers
300
Evaluate f(x)=-3 - x if x=6
What is -9?
300
What is the definition of a function?
A relationship between input and output values. Each input has exactly one output value.
400
Is it a function?
| x | y |
| 2 | 4 |
| 1 | 5 |
| 2 | 6 |
What is NO because the domain repeats?
400
Is it a function? Justify your answer.
Domain: All real numbers
Range: y = 2
400
Evaluate f(x)=25 + 4x if x=5
What is 45?
400
What is the definition of an independent variable?
A variable whose values affect the values of another variable (dependent variable). It is usually found on the x-axis of a graph.
500
Is it a function?
What is YES because it passes the Vertical Line Test?
500
What is the domain and range of y = x
Domain: All real numbers
Range: All real numbers
500
Evaluate f(x)=-(4x+2) if x=7
What is -30
500
What is the test to tell if a graph is a function?
Vertical Line Test