Unit 1 Review

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)

• A'(9,9) B'(18,18) C'(27,9)
• A'(6,6) B'(9,9) C'(12,6)
• A'(0,0) B'(3,3) C'(6,0)
• A'(1,1) B'(2,2) C'(3,1)

A dilation is which of the following: 

• An enlargement
• A reduction
• Either an enlargement or a reduction
• Neither an enlargement or a reduction

State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.

• (5,3)
• (20,12)
• (-20,-12)
• (-5,-3)

Definition: The figure after a translation has occurred. 

• Pre-image
• Image
• Translation
• Reflection

Definition: The figure before a translation has occurred. 

• Pre-image
• Image
• Translation
• Reflection

Determine how to translate triangle A'B'C' to triangle ABC.

• right two, down five
• right two, down 9
• left two, down 9
• left two, down 5

Which answer shows a reflection across the y-axis?

• a
• b
• c
• d

Is the picture being reflected in the y-axis or x-axis?

• y-axis
• x-axis

Turning a figure is a ...

• Translation
• Reflection
• Dilation
• Rotation

Sliding a figure is a ...

• Rotation
• Translation
• Dilation
• Reflection