Name
Date
Unit 2 (Functions) Review
LT #6 - I can identify a whether or not a relation is a function from a
 Graph (vertical line test)
 Ordered pairs / Table
 Mapping Diagram
LT #7 - I can identify the domain and range of a function from a
 Graph
 Ordered pairs/ table
 Mapping Diagram
 Word Problem
LT #8 - Given the domain and a function, I can find the range
LT #9 - I can write and use function notation
LT #10 – I can determine if a relationship contains discrete data or continuous data.
LT #6 - I can identify a whether or not a relation is a function from a
 Graph (vertical line test)
 Ordered pairs / Table

Mapping Diagram
1. Which of the following set of ordered pairs is NOT a function?
A.
B.
C.
D.
(9,0) , (-1,2) , (3,4) , (-5,7)
(-9,1) , (1,12) , (-3,8) , (-3,-9)
(2,4) , (-1,2) , (-9,5) , (5,17)
(3,0) , (11,-2) , (-8,1) , (1,1)
2. Identify whether the graph shows a function or a relation that is not a function. Explain
your reasoning.
3. The INT(x) command is used in spreadsheet programs. INT(x) takes any x and
rounds it down to the nearest integer. So, the inputs are any real number, and the
outputs are the rounded values. Is INT(x) a function? Explain why or why not.
LT #7 - I can identify the domain and range of a function from a
 Graph
 Ordered pairs/ table
 Mapping Diagram
Word Problem
4
5.
Draw a mapping for the relation {(4, -1), (6, -2), (3, -1)}. Then state the domain and range for the
relation.
State the domain and the range of the points on the following graph. Are they functions?
.
6.
Johnny works in a beach shop carving driftwood to make beautiful carvings to sell in his
souvenir shop. Each item he carves costs $10.Write an function to describe Johnny’s total
earnings as a function of the number of items he sells. Then, identify the independent and
dependent variables and the domain and range.**Also Learning target #10
Independent Variable:
Dependent Variable:
Domain:
Range:
Function:
7.
Hoppy the toad jumps 3 feet with every jump. His distance depends on the number of jumps.
*Also Learning target #10
Independent Variable:
Dependent Variable:
Domain:
Range:
Function:
LT #8 - Given the domain and a function, I can find the range
8. Given the domain {-3, -1, 0, 4}, find the range of the function f(x) = 6 –
9.
Given f(x) = -3 + x2 and the domain {-2, 0, 3, 5}, find the range.
1
x
2
LT #9 - I can write and use function notation
10.
If g(x) = x – 3x2, find g(-3).
11.
1
If f(x) = 5x – 7, find f(- ).
5
12. Use the graph to find each of the following:
f(x)
x
a.
f(2) = _______
b.
If f(x) = 0, x = ______
c.
f(5) = _______
d.
If f(x) = 5, x = ______