Transformation of Reflection on Coordinate Grid

What is this transformation?
(x, y) ----> (-x, y) 

• Reflect over the x axis

• Reflect over the y-axis

• Slide down 1

• slide left 1

What is this transformation?
(x, y) ----> (x, -y) 

• Reflect over the x axis

• Reflect over the y-axis

• Slide down 1

• slide left 1

Tell whether the shaded figure is a reflection of the nonshaded figure.

• Yes

• No

Reflections keep

• both congruence and orientation

• only congruence

• only orientation

• neither

Which representation of a transformation on a coordinate grid preserves congruence?
I. Rotation
II. Reflection
III. Dilation
IV. Translation

• I, II, and IV

• I and II only

• I, II, and III

• IV only

Identify the transformation from ABC to A'B'C'.

• 90^o clockwise rotation

• 90^o counter clockwise rotation

• Reflection across the y-axis

• Reflection across the x-axis

Which answer shows a reflection across the y-axis?

• a

• b

• c

• d

Point (-5,2) is reflected over the y axis.  Where is the new point located?

• (5,2)

• (-5,-2)

• (-5,2)

• (5,-2)

Translations, rotations, and reflections are three different types of what?

• Transformations

• Geometry

• Vectors

• Shapes

The mathematical term for the line that you reflect a shape over is the...

• Mirror

• Reflective tape

• Line that you reflect over

• Line of reflection