Composition Translations Rotations Reflections Dilations

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

• 4 units right

• 4 units left

• 4 units up

• 4 units down

 Describe the Transformation

• Reflection over y=x

• Rotation 90 degrees clockwise

• Rotation 90 degrees counterclockwise

• Translation

Which statement is FALSE about reflections?

• Reflections create congruent images.

• In a reflection, the image is the same distance from the line of reflection as the pre-image.

• Reflections preserve orientation.

• Reflections preserve size.

Which statement is FALSE about dilations?

• Dilations preserve size.

• Dilations preserve shape.

• Dilations preserve orientation.

• Dilations can make smaller or larger images.

A square has sides of 6 inches and is dilated to form a square that has sides of 24. What is the scale factor?

• 1/4 because 6/24 = 1/4

• 4 because 24/6 = 4

• 30 because 24 + 6 = 30

• No way to know with this information.

What is an example of the algebraic rule for a TRANSLATION?

• (3x, 3y)

• (x+3, y-2)

• (x, -y)

• (y, -x)

Which is an example of the algebraic rule for a DILATION?

• (3x, 3y)

• (x+3, y-2)

• (-x, -y)

• (y, -x)

Which algrebraic rule shows a REFLECTION across the x-axis?

• (x, -y)

• (-x, y)

• (4x, 4y)

• (y, -x)

Which algrebraic rule shows a REFLECTION across the y-axis?

• (-x, y)

• (x+9, y+3)

• (7x, 10y)

• (y, -x)

Which is the algebraic rule for a 90 degree clockwise rotation?

• (x, -y)

• (y, -x)

• (-y, x)

• (4x, 7y)