Scale Factor
Ratios
Percentages
Circles
Barrett Lore
100
Triangle A and Triangle B are similar triangles.
What is the scale factor from Triangle A to Triangle B?
4
100
The table below shows a proportional relationship between miles driven (x) and gallons of gas (y) used.
Determine the proportionality (p). Enter an equation in the form of y = px to show the relationship between miles driven (x) and gallons of gas used (y).
y=9x
100
What is 40% of 90?
36
100
The radius of a circle is 10. What is the diameter of this circle?
20
100
Who is my favorite singer?
Taylor Swift
200
The two polygons are scale copies of each other. Find the missing side of the second polygon.
30
200
There are two things that make a graph proportional. What are the two things?
1. It goes through (0,0)
2. It is in a straight line.
200
Elizabeth buys a Happy Meal for $8.00. She gets a 15% discount. What was Elizabeth's total?
$6.80
200
The diameter of a circle is 5. What is the circumference?
15.7
200
What sport did I do?
Swimming
300
Below is a scale drawing of a house. The scale factor of the drawing is 1 inch to 2.2 feet. The height of the house in the drawing is 7.9 inches.
What is the height, in feet, of the actual house?
17.38 feet
300
A snack mix recipe calls for:
Hailey wants to make the same recipe using 1 cup of caramel. How many cups of apples will Hailey need?
4 cups
300
Julio buys a skateboard for $175. He has to pay a 8% sales tax. What was Julio's total?
$189
300
This circle has a circumference of 81.64 inches.
What is the radius of the circle?
13
300
What college did I go to?
Georgetown University
400
Find the value of x.
14
400
Find the constant of proportionality. Write an equation of the form y=px that describes this graph.
y=1.5x
400
Jordan bought a shirt for $32.00. He paid a 6% sales tax. Sarah bought shoes for $45.00. She paid a 6% sales tax. How much did Jordan and Sarah pay together, including tax?
$81.62
400
The radius of a circle is 7. What is the area of the circle?
153.86
400
What state am I from?
New Jersey
500
If the rectangle below was scaled up using a factor of 7, find the area of the new rectangle.
(Hint: area = length x width )
490
500
Select all tables whose ratios of ordered pairs represent a proportional relationship between x and y.
B and C
500
Kaya had a bag of 30 ounces of popcorn. She ate 12 ounces. What percentage of popcorn did Kaya have left?
60%
500
The circumference of a circle is 50.24. What is the area of the circle?
200.96
500
Name one of my dogs (double points if you get both)
Arlo and Edie!