Transformation Review

A triangle has vertices with coordinates L(2,0), M(3, -1) and N(-2,-5). If the triangle LMN is dilated to create L'(6,0) M'(9,-3) and N'(-6,-15). What rule was applied?

• (x,y)-->(x+4,y)

• (x,y)-->(3x,3y)

• (x,y)-->(1/3x,1/3y)

• (x,y)-->(-3x,-3y)

Which rule was applied?

• (x,y)-->(2x,2y)

• (x,y)-->(3x,3y)

• (x,y)-->(1/3x,1/3y)

• (x,y)-->(1/2x,1/2y)

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½
• ¼
• 4
• 2

Tags

CCSS.8.G.A.3

Does the image show a dilation?

• Yes
• No

Tags

CCSS.8.G.A.3

A dilation is which of the following: 

• only an enlargement
• only a reduction
• Either an enlargement or a reduction
• Neither an enlargement or a reduction

Tags

CCSS.8.G.A.3

A dilation produces a similar figure

• True
• False

Tags

CCSS.8.G.A.3

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True
• False

Tags

CCSS.8.G.A.3

How do you write the algebraic notation when the scale factor is 3?

• (x, y) goes to (1/3x, 1/3y)
• (x, y) goes to (-3x, -3y)
• (x, y) goes to (x + 3, y + 3)
• (x, y) goes to (3x, 3y)

Tags

CCSS.7.G.A.1

Which of the following statements is false?

• The scale factor is 2.

• The angles are 2 times larger.

• The perimeter is 2 times larger.

• The area is 2² or 4 times larger.

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

• reduction
• enlargement
• scale factor
• center of dilation

Tags

CCSS.7.G.A.1