Composition Translations Rotations Reflections Dilations

What is the algebraic representation of a 90 degree counterclockwise rotation?

• (-y, x)

• (x + 4, y - 3)

• (6x, 6y)

• (-x, -y)

A 90 degree clockwise rotation is the same as ...

• a 90 degree counterclockwise rotation

• a 270 counterclockwise rotation

• a 180 degree rotation

• a reflection over the x-axis

Which transformation does NOT preserve congruence?

• transformation

• reflection

• rotation

• dilation

A translation moves a figure 3 units to the left. Which would describe this move?

• x - 3

• x + 3

• y - 3

• y + 3

Which two transformations preserve orientation?

• dilations and translations

• rotations and reflections

• translations and reflections

• rotations and dilations

Which of the following could be a dilation?

• (6x, 6y)

• (x + 1, y - 5)

• (x, -y)

• (-x, -y)

A figure is translated 7 units down and 3 units left. What rule describes this transformation?

• (x - 3, y - 7)

• (3x, 7y)

• (x - 7, y - 3)

• (3/7x, 3/7y)

Which scale factor would preserve congruence in a dilation?

• 0

• 1

• 4

• 0.5

A rectangle has an area of 30 cm². The rectangle is dilated with a scale factor of 3. What is the area of the new rectangle?

• 30 cm²

• 90 cm²

• 270 cm²

• impossible to know

Identify the transformation.

• Reflection across y axis

• Reflection across x-axis

• 180 Rotation

• Translation 2 units down