Reflection Across Y=X and Y=-X

A flip is also called a _________.

• Translation

• Reflection

• Rotation

• Dilation

Reflections are always _______

• Congruent

• Bigger

• Smaller

• Similar

What is the Algebraic Notation for this Reflection?

• (x, y) → (y, x)

• (x, y) → (-x, y)

• (x, y) → (-y, -x)

• (x, y) → (x, -y)

• A

• B

• C

• D

Select the rule for reflecting over the the line y=-x.

• (x,y)-->(-x,y)

• (x,y)-->(x,-y)

• (x,y)-->(-y,-x)

• (x,y)-->(y,x)

The vertices of a triangle are P(-3,7), Q(-2,1), and R(-5,2). What are the coordinates when it is reflected over the line y=x?

If you are performing a reflection in the line y=x, the rule is ...

• (x, y)

• (-x, y)

• (x, -y)

• (y, x)

The vertices of a triangle are the coordinates when it is reflected over the line y=x?

Flipping a figure is a ...

• Rotation

• Reflection

• Dilation

• Translation

If we reflect triangle ABC over the line shown (y=-x), where would A' be located? 

• (2,-5)

• (1,2)

• (-1,-3)

• (-1,-2)