Dilations Review

A dilation means to _________ a figure.

• Flip

• Turn

• Reduce or enlarge a figure

• Slide

Tags

CCSS.8.G.A.3

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)

• A'(9,9) B'(18,18) C'(27,9)
• A'(6,6) B'(9,9) C'(12,6)
• A'(0,0) B'(3,3) C'(6,0)
• A'(1,1) B'(2,2) C'(3,1)

Tags

CCSS.8.G.A.3

A scale factor of less than one means

• that the image will be larger than the pre-image.
• That the image will be the same as the pre-image.
• That you need to subtract that amount off  of each side.
• That the image will be a reduction of the pre-image.

Tags

CCSS.8.G.A.3

• A
• B
• C
• D

Tags

CCSS.HSG.CO.A.2

In a dilation what mathematical operation is used with the scale factor?

• addition 
• subtraction 
• multiplication 
• division 

Tags

CCSS.8.G.A.3

Write a rule for a dilation of (x, y) with a scale factor of 3.

• (1/3x, 1/3y)

• (-3x, -3y)

• (x + 3, y + 3)

• (3x, 3y)

Tags

CCSS.8.G.A.3

Write a rule for a dilation of 1/2?

• (2x, 2y)

• (1/2x, 1/2y)

• (-2x, -2y)

• (2x, 1/2y)

Tags

CCSS.8.G.A.3

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True
• False

Tags

CCSS.8.G.A.3

Which of the following is the algebraic representation for a dilation?

• (x, y) → (x, 3y)
• (x, y) → (3x, 3y)
• (x, y) → (x, y - 3)
• (x, y) → (.5x, .4y)

Tags

CCSS.8.G.A.3

Choose the correct scale factor:

• 2.5

• 1.5

• 3.5

• 4

Tags

CCSS.8.G.A.3