Similar Transformations

Which algebraic expression represents a dilation?

• (x,y)->(-x,-y)

• (x,y)->(x+5,y-8)

• (x,y)->(5x,5y)

• (x,y)->(-y,x)

Write a rule for the translation.

•  (x -1, y  + 2)

•  (x -2, y  + 1)

•  (x +2, y  - 1)

• (x +1, y  -  2)

How can this transformation be represented algebraically?

• (x + 4, y)

• (-x, -y)

• (-x, y)

• (y, -x)

How is trapezoid ABCD translated to trapezoid A'B'C'D'?

• Translated 5 units down and 5 units to the right

• Translated 5 units down and 1 to the right

• Translated 8 units down and 5 units to the right

• Translated 5 units down and 4 units to the right

A polygon will be dilated on a coordinate grid to create a larger polygon. The polygon is dilated using the origin as the center of dilation.
Which rule could represent this dilation? 

• (x,y) → (0.5 − x,0.5 − y) 

• (x,y) → (x−7,y−7) 

• (x, y) → (0.9x, 0.9y)

Figure I and Figure II are similar pentagons. Which proportion must be true?

• 
• 
• 
• 

Which answer shows a reflection across the x-axis?

• d

• c

• b

• a

What axis is the triangle being reflected over?

• X-axis

• Y-axis

The point Z(4, -2) is rotated 180 degrees about the origin.  What is the image of Z?

• Z'(2, 4)

• Z'(-4, 2)

• Z'(-2, -4)

• Z'(-4, -2)

Choose ALL the transformations that would produce a SIMILAR figure

• translation of 2 units left

• rotation 90 degrees clockwise

• dilation of scale factor 3

• dilation of scale factor 1/5

• reflection over the x-axis