Function Vocab
Evaluating Function Rules
Writing Function Rules
Graphing
Is it a Function?
100
True or False-A relation is a set of ordered pairs
What is TRUE?
100
Evaluate f(x)=-3x if x=2
What is -6?
100
Given the points write a function rule (0,-2);(1,-1); (2,0)
What is y=x-2?
100
This describes the graph of y=x+3.
What is linear?
100
Is it a function?
{(2, 3), (4, 5), ( -2, 6)}
What is YES because x does not repeat?
200
The set of first coordinates of a relation or a function
What is Domain?
200
Evaluate f(x)=2x+1 if x=-2
What is -3?
200
Given the points write a function rule (0,0); (1,3); (2,6)
What is y=3x?
200
This is the type of equation that gives a graph that looks like a V.
What is absolute value?
200
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
The set of second coordinates in a relation or a function
What is the range?
300
Evaluate f(x)=-3 - x if x=6
What is -9?
300
A cab company charges $12 to schedule a pick up and $1.25 for each mile they drive you.
This is a function to model the cost of a cab ride.
What is f(x)=1.25x+12
300
These are the intercepts of the function f(x) = |x-4|
What are x=(4,0) and y=(0,4)
300
Is it a function?
| x | y |
| 2 | 4 |
| 1 | 5 |
| 2 | 6 |
What is NO because x repeats?
400
A relation that assigns exactly one value in the range to each value in the domain?
What is a function?
400
Evaluate f(x)=25 + 4x if x=5
What is 45?
400
Jill is overweight at 180 lbs. She wants to loose 2 pounds per week. This function models Jill's weight after w weeks.
What is f(w) = 180 - 2w
400
This describes the increasing interval of the function f(x) = 2x - 1
What is negative infinity to infinity?
What is always increasing?
400
Is it a function?
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What is YES because it passes the Vertical Line Test?
500
The test to tell if a graph is a function
What is the Vertical Line Test?
500
Evaluate f(x)= -(4x+2) if x=7
What is -30
500
A new streaming service online gives 1 free download for every 5 rentals.
This is the Independent Variable in the model.
HINT: (downloads are a function of your rentals.)
What is your number of rentals
500
This describes the domain and range of the function f(x) = |x-4|
What is domain= all real numbers and range y>=0
500
Is it a function?
What is NO because it does not pass the Vertical Line Test?