Similarity Dilation

• A
• B
• C
• D

Dilate a figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?

• 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)

A dilation produces a similar figure.

• True

• False

What is the value of x?

• x = 4

• x = 6

• x = 3

• x = 2

Solve the proportion.

• p=31.3

• p=308

• p=924

• p=532

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

How do you write the algebraic notation when the scale factor is 1/2?

• (x, y) goes to (2x, 2y)

• (x, y) goes to (1/2x, 1/2y)

• (x, y) goes to (-2x, -2y)

• (x, y) goes to (2x, 1/2y)

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)

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

• Enlarge

• Reduce

• None of the above

What scale factor was used to produce the image?

• 2

• -2

• ¹/₂

• 1