Lesson Quizzes
Preview
4-1 Graphing Relationships
4-2 Relations and Functions
4-3 Writing and Graphing Functions
4-4 Scatter Plots and Trend Lines
4-5 Arithmetic Sequences
4-1 Graphing Relationships
Lesson Quiz: Part I
1. Write a possible situation for the given graph.
Possible answer: The level of water in a bucket
stays constant. A steady rain raises the level. The
rain slows down. Someone dumps the bucket.
4-1 Graphing Relationships
Lesson Quiz: Part II
2. A pet store is selling puppies for $50 each. It has
8 puppies to sell. Sketch a graph for this
situation.
4-2 Relations and Functions
Lesson Quiz: Part I
1. Express the relation {(–2, 5), (–1, 4), (1, 3),
(2, 4)} as a table, as a graph, and as a
mapping diagram.
4-2 Relations and Functions
Lesson Quiz: Part II
2. Give the domain and range of the relation.
D: –3 ≤ x ≤ 2: R: –2 ≤ y ≤ 4
4-2 Relations and Functions
Lesson Quiz: Part III
3. Give the domain and range of the relation.
Tell whether the relation is a function. Explain.
D: {5, 10, 15};
R: {2, 4, 6, 8};
The relation is not a
function since 5 is paired
with 2 and 4.
4-3 Writing and Graphing Functions
Lesson Quiz: Part I
1. Graph y = |x + 3|.
4-3 Writing and Graphing Functions
Lesson Quiz: Part Il
Identify the independent and dependent
variables. Write a rule in function notation for
each situation.
2. A buffet charges $8.95 per person.
independent: number of people
dependent: cost
f(p) = 8.95p
3. A moving company charges $130 for weekly truck
rental plus $1.50 per mile.
independent: miles
dependent: cost
f(m) = 130 + 1.50m
4-3 Writing and Graphing Functions
Lesson Quiz: Part III
Evaluate each function for the given input
values.
4. For g(t) =
t = –12.
g(20) = 2
g(–12) = –6
find g(t) when t = 20 and when
5. For f(x) = 6x – 1, find f(x) when x = 3.5 and when
x = –5.
f(3.5) = 20
f(–5) = –31
4-4 Scatter Plots and Trend Lines
Lesson Quiz: Part I
For Items 1 and 2, identify the correlation
you would expect to see between each pair
of data sets. Explain.
1. The outside temperature in the summer and
the cost of the electric bill
Positive correlation; as the outside temperature
increases, the electric bill increases because of
the use of the air conditioner.
2. The price of a car and the number of
passengers it seats
No correlation; a very expensive car could seat
only 2 passengers.
4-4 Scatter Plots and Trend Lines
Lesson Quiz: Part II
3. The scatter plot shows the number of orders
placed for flowers before Valentine’s Day at one
shop. Based on this relationship, predict the
number of flower orders placed on February 12.
about 45
4-5 Arithmetic Sequences
Lesson Quiz: Part I
Determine whether each sequence appears to
be an arithmetic sequence. If so, find the
common difference and the next three terms
in the sequence.
1. 3, 9, 27, 81,…
not arithmetic
2. 5, 6.5, 8, 9.5,…
arithmetic;
1.5; 11, 12.5, 14
4-5 Arithmetic Sequences
Lesson Quiz: Part II
Find the indicated term of each arithmetic
sequence.
3. 23rd term: –4, –7, –10, –13, … –70
4. 40th term: 2, 7, 12, 17, … 197
5. 7th term: a1 = –12, d = 2
0
6. 34th term: a1 = 3.2, d = 2.6 89
7. Zelle has knitted 61 rows of a scarf. Each
day she adds 17 more rows. How many
rows total has Zelle knitted 16 days later?
333 rows