Function Vocab
Evaluating Function Rules
Direct Variation
Inverse Variation
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
What is the constant of variation for the function y = 6x?
What is 6?
100
What is the constant of variation in the function y = 15/x?
What is k = 15?
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
What is the constant of variation if y=12 when x=6?
What is k=2?
200
What is the constant of variation if y = 9 when x = 3?
What is k = 27?
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 3?
300
If y varies directly as x, and y = 6 when x = 5, find y when x = 10.
What is y = 12?
300
If y varies inversely as x, and y =8 when x = 5, find y when x = 4.
What is y = 32?
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)=2x2 - 3x + 1 if x = -1
What is 6?
400
If y varies directly as x, and y = 3 when x = 5, find y when x = 15.
What is y = 9?
400
If y varies inversely as x, and y = 9 when x = 10, find y when x = 5.
What is y = 18?
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 26?
500
If y varies directly as x, and y = 16 when x = 2, find y when x = 4.
What is y = 32?
500
If y varies inversely as x, and y = 3 when x = 21, find y when x = 9.
What is y = 7?
500
Is it a function?
What is NO because it does not pass the Vertical Line Test?