Math Transformations Review

Definition: The figure before a translation has occurred. 

• Pre-image

• Image

• Translation

• Reflection

Definition: The figure after a translation has occurred. 

• Pre-image

• Image

• Translation

• Reflection

Which statement is FALSE about dilations?

• Dilations preserve size.

• Dilations preserve shape.

• Dilations preserve orientation.

• Dilations can make smaller or larger images.

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.

Reflecting over the y-axis changes the ____-_____________. 

• x-axis

• x-coordinate

• y-coordinate

• none of the above

Which transformation will change the orientation of vertices of a figure?

• Translation

• Reflection

• Rotation

• Dilation

Which 2 transformations will change the orientation of a figure?

• Translation

• Reflection

• Rotation

• Dilation

What is true about the image after its transformation?

• The orientation has changed

• The orientation of vertices has changed

• The size has changed

• It has been reflected

Select the two transformations that have occurred

• Translation

• Reflection

• Rotation

• Dilation

What is the algebraic representation?

T(1, 2) → T'(-2, 1)

• (x, -y)

• (-x, -y)

• (-y, x)

• (y, -x)