Function Vocab
Evaluating Function Rules
Writing Function Rules
Miscellaneous
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)
What is y=x-2?
100
Is the graph a function? why or why not?
No because points (3, 2) and (3, 3) have the same x value
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)
What is y=3x?
200
If this function was graphed, what would it look like?
y = 3x2 - 4
It would NOT be a straight line, it would make a U shape or a parabula
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
What value of x will make the relation a function?
(2,5) (-3, 4) (-4, -4) (x, -5)
a. 2 b. -3 c. -4 d. -5
d. -5
300
If the relationship between the amount of money made at a movie theater and number of tickets bought was graphed, which variable should be graphed on the y-axis?
a. Amount of money made, because it is the independent variable.
b. Number of tickets, because it is the independent variable
c. Amount of money made, because it is the dependent variable
d. Number of tickets, because it is the dependent variable
C. Amount of money made is dependent variable because the number of tickets sold depends on the amount of money made
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
Write an equation of the function for the table shown below:
y=3x
400
The quadrant that doesn't contain one of these points (-2,3), (3,-4) (2,3)
What is the third quadrant?
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
Sally has attended her school's annual carnival for two years in a row. This year's ticket prices for the rides are shown in the table. Write the equation for this table
y = x + 2
500
What are the three criteria you used to determine the type of function?
1. xy cannot be combined
2. The variable cannot be in the denominator
3. There cannot be be square roots or cubed roots
500
Is it a function?
What is NO because it does not pass the Vertical Line Test?