Transformations and Their Rules

A transformation is applied to a figure to create a new figure on a coordinate grid. Which transformation does NOT preserve congruence?

• A rotation of 270 counterclockwise.

• A reflection across the y-axis

• A dilation by a scale factor of 1.5

• A translation of 50 units down

Tags

CCSS.HSG.CO.A.2

A figure was transformed on a coordinate grid using the rule (x,y) -> (-x, -y). Which of the following describes this transformation?

• A reflection across the x-axis

• A reflection across the y-axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

When translating a figure horizontally on a coordinate plane, you change the ​ (a)   coordinate by ​ (b)   it.

• x

• adding to or subtracting from

• y

• multiplying or dividing

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A reflection ​ (a)   a figure over a line of reflection in order to create a mirror image.

• flips

• moves

• spins

• rotates

• dilates

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

​ (a)   are the only transformation where the x and y coordinates switch places.

• Rotations

• Reflections

• Translations

• Dilations

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the rule for reflecting across x-axis

• change x

• change y

• change both

• flip

• flip and change both

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the rule for reflecting across y-axis

• change x

• change y

• change both

• flip

• flip and change both

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the rule for reflecting across origin

• change x

• change y

• change both

• flip

• flip and change both

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the rule for reflecting across -y=x

• change x

• change y

• change both

• flip

• flip and change both

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the rule for a 270 clockwise rotation?

• flip and change the 1st

• flip and change the 2nd

• change both

• flip

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5