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Unit 4 - Functions
Contributed by: Maher
Which of the following words do not belong?
Dependent Variables
Range
Output
x-values
What is the domain of this set?     {(2,5), (4,7), (3,6), (6,9)}
{5, 6, 7, 9}
{2, 3, 4, 6}
{2, 3, 4, 5, 6, 7 9}
{(2,5), (4,7), (3,6), (6,9)}
What is the range of this set?     {(2,5), (4,7), (3,6), (6,9)}
{5, 6, 7, 9}
{2, 3, 4, 6}
{2, 3, 4, 5, 6, 7 9}
{(2,5), (4,7), (3,6), (6,9)}
What is a relationship between 
sets of information?
Domain
Range
Relation
Function
Which of the following words does not belong?
Domain
Dependent Variable
Input
x-values
What is a relation in which each input has 
only one output?
Input
Output
Function
Relation
Is the following relation a function?
Yes
No
If a vertical line passes through a graph more than once, the graph does NOT represent a function.
True
False
Determine if the graph is a function.
Function
Not a Function
What is used to determine whether or not a graphrepresents a function?
x-axis and y-axis
Straight/Curved Line
Vertical Line Test
Horizontal Line Test
For                    , find the range
value the domain value is 5.
For                 , find the domain value when the range is 17.
Determine if the graph is a function.
Not a Function
Function
Given the inputs of {-3, 0, 3, 6}, name 
the domain and range of 
the function:
(Separate numbers with commas, but no spaces)
Domain: {               }
Range: {                }
For the function graphed below, determine the output value when the input value is 1.
David measures how many inches his tomato plant
grows every week.
What is the dependent variable?
Inches the plant has grown
The number of weeks it has been growing
What is the independent variable?
Your math grade reflects the number of assignmentsyou have turned in.
Math grade
Assignments turned in
Cell phone bill, because it is the dependent variable
Cell phone bill, because it is the independent variable
Minutes used, because it is the dependent variable
Minutes used, because it is the independent variable
The minutes used each much determines your 
cell phone bill. If this relationship was graphed,
which variable would be graphed on the x-axis?
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