Dilations

A dilation is which of the following: 

• only an enlargement
• only a reduction
• either an enlargement or a reduction
• neither an enlargement nor a reduction

Tags

CCSS.8.G.A.3

Did the image enlarge, reduce or none of the above?

*Make sure look at at the pre-image in blue and the prime image in green.

• Enlarge

• Reduce

• None of the above

Does the image show a Dilation? If yes, did the image enlarge, reduce or none of the above?

• Yes, enlarge
• Yes, reduce
• No

Tags

CCSS.8.G.A.3

What scale factor was used to produce the image?

*hint: N goes from (-1,2) to N' (-2, 4)

• 2

• 3

• 1/3

• 1/2

What scale factor was used to produce the image?

• 1
• 7
• 18
• 49

Tags

CCSS.8.G.A.3

What scale factor was used to produce the image?

*hint: A is (2,6) to A' (1,3)

• 2

• -2

• ¹/₂

• 1

Find the measure of x:

• 6

• 24

• 33

• 36

State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.

• (4,3)

• (20,12)

• (-20,-12)

• (-5,-3)

State the coordinate of the image of the given point B (4,9) under a dilation with center at the origin with the given scale factor r = 2.

• (2,4.5)
• (-8,-18)
• (8,18)
• (9,4)

Tags

CCSS.8.G.A.3

The red triangle has been dilated by a scale factor of 1/4 about the origin, which triangle is it's new image? 

• green triangle 
• red triangle 
• black triangle
• none of these 

Tags

CCSS.8.G.A.3