Domain and Range
Am I a function?
Evaluate Functions
Key Features of Graphs
Miscellaneous
100
Find the DOMAIN:
{(-2, 4), (3, 2), (2, 10)}
{-2, 2, 3}
100
No, not a function It does not pass the vertical line test.
100
f(-3) if f(x) = 2x +1
-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
200
Find the RANGE in
{-6, -5, -2, 3, 5}
200
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
w(x)=2x+5 represents a baby's weight in pounds at x months.
What does w(5)=15 mean?
at 5 months the baby weighs 15 pounds
300
Find DOMAIN and RANGE:
D= -1 to 4
R=-4 to 5
300
The mapping diagram shows a function or not.
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
What is the vertical intercept here:
-2
400
Find the DOMAIN and RANGE:
D = {ALL REAL NUMBERS}
R= {ALL REAL NUMBERS}
400
Does the following table represent a function?
x y
1 2
2 5
6 2
2 9
5 1
No, because the input of 2 has two different outputs 5 and 9
400
Let f(x) = x2 + x + 1; find f(-5).
21
400
Find f(x)=0
x= -4, -1 and 2
400
Let h(x) be the percent of U.S. households with internet access x years after 1980.
What does h(20)= 55 mean?
55% of U.S. households had internet access in 2000 (20 years after 1980)
500
Skyler mows lawns in the summer. The function 
What would be an appropriate domain?
1. real numbers 3. real numbers greater than 0
2. whole numbers 4.whole numbers greater than 0
What would be an appropriate range?
1. real numbers 3. real numbers greater than 0
2. whole numbers 4.whole numbers greater than 0
Domain: all whole numbers greater than 0
Range: all real numbers greater than 0
500
Is this a function and why?
no, because the range of 8 repeats
500
Find f(x) = 9
x=1
500
What is the vertical intercept of the graph.
(0,4)
or y=4
500
(y_2-y_1)/(x_2-x_1)
(1,416) (4,542)
(542-416)/(4-1)=(126)/(3)=42