Reflection Rules Use your notebooks

Which answer shows a reflection across the x-axis?

• d
• c
• b
• a

The original figure prior to a transformation.

• Pre-image
• Image

Reflect the point (2, -4) over the y-axis.

• (-4, 2)
• (-2, 4)
• (-2, -4)
• (2, 4)

B(-2, -4)

Reflect over the line y = x

What is B'?

• (2, -4)

• (-4, 2)

• (-4, -2)

• (4, 2)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Point C (-5, 4)

Reflect over the x-axis.

What is C'?

• (5, 4)

• (-5, -4)

• (5, -4)

• (-5, 4)

What is the mapping for this reflection?

• (x, y) → (y, x)

• (x, y) → (-x, y)

• (x, y) → (-y, -x)

• (x, y) → (x, -y)

What is the rule for reflecting ( x , y )

over the line y = x?

• ( -x , y )

• ( x , -y )

• ( y , x )

• ( x , y )

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the rule for refelecting ( x , y )

over the y-axis?

• ( -x , y )

• ( x , -y )

• ( y , x )

• ( x , y )

Point B ( -6,1)

Reflected over the line y = -x?

• (-1,-6)

• (6,-1)

• (1,6)

• (-1,6)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

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

• Reflect over the x axis
• Reflect over the y-axis
• Slide down 1
• slide left 1