Transformation Rules

The rule for reflection over the y-axis is  
(x, y) --> _

• (-x, y)
• (x, -y)
• (y, x)
• (-y, x)

Translations, reflections and rotations are all known as ________________________.

• Geometry
• Transformations
• Congruent

When you translate, (x-4,y) will move _____.

• 4 units right
• 4 units left
• 4 units up
• 4 units down

Apply the following rule to the point (-5,6):
(x,y)-->(y,-x)

• (-5,-6)
• (5,-6)
• (6,5)
• (-6,5)

The rule for rotation of 180 degrees is  
(x, y) --> _

• (-y, x)
• (-x, -y)
• (y, -x)
• (-y, -x)

The rule for rotation of 90 degrees clockwise is  
(x, y) --> 

• (y, -x)
• (-y, x)
• (x, -y)
• (-x, y)

The rule for rotation of 90 degrees counterclockwise is  
(x, y) --> _

• (y, -x)
• (-y, x)
• (x, -y)
• (-x, y)

(x,y) --> (x+a, y+b)

• translation
• rotation
• reflection
• dilation

Which of the following maintains orientation?

• Rotation 90 ° 
• Translation
• Rotation 180 ° 
• Reflection over the x axis

(x,y) --> (x, -y)

• Reflection over the y-axis
• Reflection over the x-axis
• Translation 
• Rotation 180 °