Vocabulary
Evaluating Function Rules
Domain & Range
Is it a Function?
100
What else is a domain called?
Input, X
100
Evaluate y=x(2) if x=-3
y = -6
100
State the domain and range:
| x | y |
| 3 | 7 |
| 5 | 9 |
| 3 | 8 |
D: {3, 5}
R: {7, 8, 9}
100
Is it a function? Justify your answer.
{(2, 3), (4, 5), ( -2, 6)}
Yes, each input has exactly one output.
200
What else is a range called?
Output, Y
200
Evaluate y= -(4x+2) if x=7
= -30
200
State the domain and range: 
D: {1, 2, 3, 4, 5, 6} R: {-1, 0, 1, 2, 3, 6}
200
Using the vertical line test, does the graph of the points (1,3) and (1,5) represent a function?
No, the points fail the Vertical Line Test.
300
What is the definition of a function?
A relationship between input and output values. Each input has exactly one output value.
300
Evaluate if y=x - 9 if x=14
y=5
300
State the domain of the ordered pairs
(2,3) (3,5) (5,7) (7,9)
2
3
5
7
300
Is it a function? Justify your answer.
| x | y |
| 2 | 4 |
| 1 | 5 |
| 2 | 6 |
No, the input of 2 has two different outputs.
400
Which variable is the input, and which one is the output?
x-variable is the input, y-variable is the output
400
Evaluate y=25 - 4x if x=9
y=-20
400
State the range of the ordered pairs
(4,2) (6,4) (8,6) (10,8)
2
4
6
8
400
Is it a function? Justify your answer.
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Yes, it passes the Vertical Line Test.
500
What is the test to tell if a graph is a function?
Vertical Line Test
500
Evaluate y=3x+15 if x=5
y = 30
500
What numbers do we use in class if the Domain is not provided?
-2,-1,0,1,2
500
(0,0) (1,3) (2,6) (3,9)
Yes there are no repeating domains