Reading Proportional Graphs & Tables
Which one is the better deal?
Scale factor
Circles
Random Samples
100
Write an equation to match this graph.
y = 2x
100
Which one is the better deal? Show how you know.
Small box = $0.40/oz
Big Box = $0.31/oz
Big box is the better deal
100
If these are similar triangles, what is the scale factor being used?
Scale Factor = 5
100
What is the Diameter of this circle?
Diameter = 12 cm
100
The student council wants to conduct a survey to predict what portion of the students believe the should should have a boy's volleyball team. Is asking 1 student from each 8th grade Jaytime a good representative sample?
No, you are not getting all grade levels. Also, that is a pretty small sample.
200
What is the unit rate represented on this graph?
Don't forget to include the labels.
$0.50/cookie
200
Which one is the better deal? Show how you know.
Small Bottle = $0.08/oz
Big Bottle = $0.10/oz
Small Bottle is the better deal
200
If these are similar figures, what is the scale factor being used?
Scale Factor = 1.5 or 1 1/2
200
What is the radius of this circle?
Radius = 9cm
200
The student council wants to conduct a survey to predict what portion of the students believe they should have a boy's volleyball team. Is asking every 10th person in each lunch room a good representative sample?
Yes, it is random and you are getting some of each type of student.
300
Write an equation to match this graph.
y = 3x
300
Which one is the better deal. Show how you know.
Small Can = $0.38/oz
Big Can = $0.42/oz
Small can is the better deal
300
The Statue of Liberty is 111.5ft tall from head to toe. If the woman is it was modeled after was 5ft tall, what scale factor did they use to create the statue?
Scale factor = 22.3
300
Find the circumference of the circle.
C = 56.52 cm
300
The student council wants to conduct a survey to predict what portion of the students believe they should have a boy's volleyball team.
How could you gather a good representative sample?
Answers vary
400
Find the unit rate for this table. Don't forget the Labels.
$1.50/ticket
400
Donna's Donuts sells each donut for $0.32. Brenda's Baked Goods sells a dozen (12) donuts for $3.60. Which bakery is offering the better deal?
Brenda's Baked Goods (each donut is $0.30)
400
How does the area change between these two?
scaled rectangles.
The area is 16 times bigger.
400
Find the area of this circle.
Area = 21.2264 cm2
400
The results from a survey showed that 40 students wanted a boy's volleyball team, while 16 did not.
If there are 896 students at the school, how many would want a boy's volleyball team?
640 students
500
Write an equation to match this table.
y = 13x
500
Which one is the better deal. Show how you know.
Jasmine's Tacos. They cost $2/taco
500
How does the perimeter change between these two?
The perimeter is 3 times bigger.
500
Find the area of this circle.
Area = 254.34 cm2
500
Suzy completed a survey with a representative sample of people in Menasha. 78 people said that they prefer dogs over cats, while 24 prefer cats.
If there are 17,544 people in Menasha, how many of them prefer cats?
4,128 people