Name: _______________________________Period: _________________
Problem Set #21
Assigned: Thursday 2/9/17
Due: Thursday 2/16/17
BE SURE TO SHOW ALL WORK TO RECEIVE FULL CREDIT!!!!!
COUNTS AS 10% OF YOUR GRADE
1.) Patrick and Danielle’s son plays baseball. For his senior year they had a
poster made that was 5 feet by 3 feet. They liked the poster so much
𝟐
they had magnets made measuring 4 inches by 𝟐 inches to give to family
𝟓
members. What is the scale factor? HINT: BE SURE TO CONVERT TO
SAME UNITS. ALL WORK MUST BE SHOWN TO RECEIVE CREDIT.
{20 POINTS}
2.) Sharon’s mother saw a picture that she thought her son would like.
His mother took a picture of it using her IPhone 6. The
original picture measured 2 feet by 3 feet. The scale factor of her
𝟏
IPhone 6 is . Calculate the size of the picture on the IPhone 6
𝟏𝟔
in inches. {2.5 POINTS FOR EACH EQUATION, 5 POINTS EACH FOR
WORK, 2.5 POINTS FOR EACH ANSWER}
LENGTH ON CELL PHONE
WIDTH ON CELL PHONE
3.) Line KN represents a proportional relationship. Point N lies at (18, 12),
as shown on the graph below.
Which ordered pair could represent the coordinates of point K? {10 POINTS}
A) (6, 0)
B) (2, 3)
C) (1.5, 0)
D) (7.5, 5)
4.)
Mr. Jones gave his class 10 minutes to read. Rebecca read
𝟏
𝟕 pages in that time. At what rate, in pages per hour, did
𝟐
Rebecca read? ALL WORK MUST BE SHOWN TO RECEIVE
CREDIT. {20 POINTS}
5.) Maya uses blue and orange fabric to make identical wall decorations. The
graph below shows the relationship between the amounts of blue and orange
fabric used.
What is the constant of proportionality as shown in the graph? WORK MUST
BE SHOWN TO RECEIVE CREDIT. {10 POINTS}
A)
𝟑
𝟏𝟎
B)
𝟐
C)
𝟑
D)
𝟏
𝟓
𝟕
𝟐
6.) Answer the following questions about the graph above.
a) Write the linear equation that represents the proportional relationship
shown in the graph.{10 POINTS}
b) Describe what the point (0,0) on the graph represents in terms of the
situation being described by the graph. {5 POINTS}
c) What coordinate represents the unit rate? {5 POINTS}