Reflections Rules

What is the Algebraic Notation for this Reflection?

• (x, y) → (y, x)

• (x, y) → (-x, y)

• (x, y) → (-y, -x)

• (x, y) → (x, -y)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the Algebraic Notation for this Reflection?

• (x, y) → (y, x)

• (x, y) → (-x, y)

• (x, y) → (-y, -x)

• (x, y) → (x, -y)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Reflections over the x-axis change the ____-__________. 

• y-coordinate

• x-coordinate

• y-axis

• x-axis 

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

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

• Reflection across the x-axis

• Reflection across the y-axis

• 90^o clockwise rotation

• 90^o counterclockwise rotation

Tags

CCSS.8.G.A.3

The rule for reflection over the y-axis is  
(x, y) --> _

• (-x, y)

• (x, -y)

• (y, x)

• (-y, x)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

(x,y) --> (x, -y)

• Reflection over the y-axis

• Reflection over the x-axis

• Translation 

• Rotation 180 ° 

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A transformation in which a geometric figure is reflected across a line, creating a mirror image. 

• Translation

• Reflection

• Rotation

• Dilation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Reflect over the x-axis.
Find K′.

• (4, 1))

• (-1, -4)

• (1, -4)

• (1, 4)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Select ALL correct ordered pairs after a reflection across the x axis.

• K' (1 , 1)

• K' (-1,-1)

• N' (4 , 0)

• N' (-4 , 0)

• Q' ( 4 , 4)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Triangle IJK has the coordinates listed:

I(5, -8) J(10,-8) K(7, -4)

Where is J' after a reflection of the y-axis.

• (-10,-8)

• (10,8)

• (8,10)

• (-8,10)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5