Function Vocab
Evaluating Function Rules
Physical Characteristics of Graphs
Is it a Function?
Real World Functions
100
True or False-A relation is any set of ordered pairs whether represented as points, tables, mappings, or graphs.
What is TRUE?
100
Evaluate f(x)=-3x if x=2
What is -6?
100
Is this graph linear, nonlinear, increasing, decreasing, continuous, and/or discrete?
What is linear, decreasing, and continuous?
100
Is it a function?
{(2, 3), (4, 5), (-2, 6)}
What is YES because x does not repeat?
100
You put in your dollar at the vending machine and click Reese's cups. Reese's cups comes out of the vending machine. Is this example a function? Why?
What is yes because the input has only one output?
200
The set of first coordinates of a relation or a function
What is the x, input, and domain?
200
Evaluate f(x)=2x+1 if x=-2
What is -3?
200
Is this graph linear, nonlinear, increasing, decreasing, continuous, and/or discrete?
What is nonlinear, decreasing, and continuous?
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
200
The number of calories in a fast food hamburger
What is no because the number of calories in a fast food hamburger depends on the fast food restaurant
300
The set of second coordinates in a relation or a function
What is the y, output, and range?
300
Evaluate f(x)=-3 - x if x=6
What is -9?
300
Is this graph linear, nonlinear, increasing, decreasing, continuous, and/or discrete?
What is linear, increasing, and discrete?
300
Is it a function?
| x | y |
| 2 | 4 |
| 1 | 5 |
| 2 | 6 |
What is NO because x repeats?
300
Your teacher sends the whole pod a Remind text about an upcoming test on Friday. Is this an example of a function? Why?
What is no because the input (text message) has numerous outputs (the kids that received the Remind text)?
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
Is this graph linear, nonlinear, increasing, decreasing, continuous, and/or discrete?
What is nonlinear, increasing, decreasing, and continuous?
400
Is it a function?
What is YES because it passes the Vertical Line Test?
400
You have a coffee machine that you put water and coffee grounds in to get the coffee. Is this an example of a function? Why?
What is yes because the input of water and coffee grounds gives you only one output which is coffee.
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
Is this graph linear, nonlinear, increasing, decreasing, continuous, and/or discrete?
What is nonlinear and discrete?
500
Is it a function? 
What is NO because it does not pass the Vertical Line Test?
500
You put money into a drink machine and choose a drink, but no drink comes out. Is this an example of a function? Why?
What is no because in order to be a function every input must have only one output. In this example there is no output so it is not a function.