Vocab
Am I a function?
What's my function?
Key Features of Graphs
Miscellaneous
Interpret Functions
100
This word is used to describe the set of all inputs for a function.
What is the domain?
100
What is No, not a function? It does not pass the vertical line test.
100
f(-3) if f(x) = 2x +1
What it -5 ?
100
Find f(2.5)
3
100
Is the relation {(3,4), (4,8), (8,3), (3,9)} a function?
No, there is a repeated x value
100
Let f(x)=x+3.
What does f(2) represent in words?
The value of function f when x=2
200
This word is used to describe the set of all outputs of a function.
What is the range?
200
What is Yes?
200
Let h(x)=800
Find h(7)
h(7)=800
200
What is the maximum value for the graph? Use Function notation (f(__)=__)
f(-2)=6
200
What is the outputs of the situation?
{0,20,40,60,80,100,120}
200
w(x)=2x+5 represents a baby's weight in pounds every month. What do x and w(x) mean in words?
x is the month, w(x) is the baby's weight in pounds
300
What is the maximum value of a graph?
The largest y- value of the graph.
300
The mapping diagram shows a function or not.
What is No, not a function?
300
Based on the graph of the function, what is f(4)?
f(4) = -2
300
What is the minimum of this graph? Use function notation (f(__)=___)
f(-4)=-3
300
Let f(x)=3+x.
Solve for x when f(x)=17
Write your answer as "x=___ so f(___)=17"
x=14 so f(14)=17
300
c(x)=70x-10 represents the cost of a ticket to a rock concert. How many tickets can you buy with $200?
3 tickets
400
How do you determine if a GRAPH is a function or not?
What is the Vertical Line Test?
400
Does the following table represent a function?
x y
1 2
2 5
6 2
2 9
5 1
What is No, because the domain of 2 has two different ranges 5 and 9
400
Let f(x) = x2 + x + 1; find f(-5).
What is 21?
400
Find f(x)=0
x= -4, -1 and 2
400
Find the rate of change between 0 and 20 seconds
(0,0) (20,80)
(20-0)/(80-0)=20/80=1/4
400
Let P(t) be the number of people P at the beach t hours past midnight. What does the statement P(5)<P(9) mean in words?
There were fewer people at the beach at 5 a.m. than at 9 a.m.
500
This word describes any set of ordered pairs where each x-value is paired with one y-value.
What is a Function?
500
Is this a function and why?
What is no, because the range of 8 repeats?
500
Find f(4) =
0
500
The y-intercept of the graph.
What is (0, 4)?
500
Which functions, when the output is 7, have an input that is less than 3?
f(x)=x-5
g(x)=3x+1
h(x)=12+5x
g and h have inputs less than 3 when the output is 7.
when f(x)=7, x=12
when g(x)=7, x=2
when h(x)=7, x=-1
500
Let h(x) be the percent of U.S. households with internet access x years after 1980. What does h(20)=n mean?
n percent of U.S. households had internet access in 2000 (20 years after 1980)