Scale Factor / Copier Size Factor
A square's side-lengths measure 4 inches. An image is created having side-lengths of 16 inches.
What scale factor was applied?
4.
The Coordinates for Wumps hat are on the board. Apply these rules to graph the new hat.
(x-1, y-1)
A (0,0)
B (8,0)
Describe what happens to a Wump with these rules: (5x, 8y)
It is 5x wider and 8x taller.
Does this create a similar new shape?
Original (x, y) Image (5x, 5y)
Yes, similar. (Same SF applied)
What is the perimeter of a square with side lengths measuring 20 ft?
What is 80 ft.
What scale factor was used to create an image that is three times larger?
Give answer in a percent!
300%
The Coordinates for Wumps hat are on the board. Apply these rules to graph the new hat.
(x+5, y-1)
A (6,0)
B (14, 0)
Describe what happens to a Wump with these rules: (x+3 , 0.5y)
Moves to the right 3 and 0.5x as tall.
Does this create a similar new shape?
Original (x, y) Image (12x, 11y)
NO, not similar. (Different SF)
What is the area to a rectangle with a width of 12 cm and a length of 8 cm?
What is 96 sq. cm.
An original rectangle measures 9 in. x 14 in.
An image measures 117 in. x 182 in. What scale factor was applied?
13.
The Coordinates for Wumps hat are on the board. Apply these rules to graph the new hat.
(.5x , .5y )
A (.5, .5 )
B (4.5, .5)
Describe what happens to a Wump with these rules: (x + 2, 6y)
Moves 2 units to the right, and 6x taller.
Are these similar?
1. right triangle with a base of 7 cm and a height of 9 cm to another
2.right triangle with a base of 42 and a height of 54 cm.
YES, similar figures by a SF of 6.
How much greater is the perimeter of an image if the scale factor is 7?
What is 7x greater.
A triangle's legs measure 224 cm. and 280 cm.
An image is created and it's legs measure 32 cm. and 40 cm.
What scale factor was applied to create the image?
What is 1/7 or 7 (smaller to bigger)
The Coordinates for Wumps hat are on the board. Apply these rules to graph the new hat.
( x+6, 2y )
A (7, 2)
B (15, 2)
Describe what happens to a Wump with these rules: (10x - 55, y)
What is 10x wider, moves 55 units left, y stays the same
Are these similar?
1.A rectangle with a length of 16 in. and a width of 18 in.
2. rectangle with a length of 128 in. and a width of 162 in.
NO, not similar. [Different SF applied, (8 and 9)]
What is the area of a triangle with a base of 18 cm and a height of 21 cm?
What is 189 sq. cm.
A rectangle has a width of 85 in. and a length of 105 in.
The new image has a width of 17 in. and a length of 21 in.? What is the SF?
SF = 1/5 (Bigger to smaller)
The Coordinates for Wumps hat are on the board. Apply these rules to graph the new hat.
(2x, 1.5y)
A ( 2, 1.5 )
B (18 , 1.5)
Desribe what happens to a Wump with these rules: (65x, 0.3y )
65x wider and 1/3 of the height shorter
Are these similar?
1. A triangle with a base of 90 m. and a height of 120
2. triangle with a base of 6 m. and a height of 15 m.
NO, not similar. (SF of 1/15 and 1/8)
The original rectangle is length of 2 and width of 5
How much greater is the area of a figure if the scale factor is 6?
HINT: Find the Area of the 2 figures first
36 times larger