Ratios and Scale Factor

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'(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)

Solve for x 

• x = 6

• x = 25

• x = 28

• x = 17

Solve for k

• 165

• 17

• 1/17

• 1/165

Find missing side

• 5

• 7

• 9

• 11

Find the perimeter of the large triangle.

• 24

• 36

• 12

• 54

Solve the proportion:

• 4

• 8

• 14

• 10

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

What is the scale factor from ABCD to MNOP?

• 2/3

• 3/2

• 2

• 3

• 4
• 12

What is the scale factor from ΔDEF to ΔABC?

• 2

• 3/2

• 2/3

• 1/2