Adv. 7th Transformations Review

What transformation is happening?
(x, y) ----> (x + 2, y - 3) 

• slide up 2, left 3
• slide right 2, up 3
• slide right 2, down 3
• slide left 3, right 2

Write a rule for the translation.

•  (x - 1, y  + 2)
•  (x - 2, y  + 1)
•  (x + 2, y  - 1)
• (x + 1, y  -  2)

Reflect Point C over the y-axis:

• (-3, 2)
• (3, 2)
• (-2, 3)
• (3, 0)

Are the two triangles similar? If so, what is the scale factor?

• Yes, 2
• No
• Yes, 1/2
• Yes, 3

What happens to the coordinates when you reflect a polygon over the x-axis?  

Which rule describes the action of the coordinates when a figure is dilated by a scale factor of 2?

• (x, y)→(x+2, y+2)

• (x, y)→(2x, 2y)

• (x, y)→(x/2, y/2)

• (x, y)→(x-2, y-2)

• Dilations

  (Enlargement)

• Reflections

• Dilations

  (Reduction)

• Rotations

A dilation produces a similar figure

• True

• False

When A(3, 6) is under a dilation of 2 what are the coordinates of A'?

• (3, 6)

• (1.5, 3)

• (6, 12)

• (12, 6)