Transformations: Reflections in the Coordinate Plane

Identify the transformation from ABCD to A'B'C'D'.

• Translation
• Reflection across the x-axis
• Reflection across the y-axis
• 90^o counter clockwise rotation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Point A of triangle ABC is at (3, 2). If triangle ABC is reflected about the y-axis, what are the

coordinates of point A’ ?

• ( 3 , -2)

• ( -3 , 2)

• ( -2 , -3 )

• ( 2 , 3 )

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A trapezoid is shown in the coordinate plane. Which of the following gives the line or lines of symmetry about which the trapezoid can be reflected in order to map the trapezoid onto itself?

• y = x

• x = 4

• x = 4 and y = 2

• x = 0 and y = 0

Tags

CCSS.4.G.A.3

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

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Explain the reflection...
(x,y)→(−x, y)

• reflection over the x-axis
• reflection over the y-axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Point N(6, –5) is reflected across the

x-axis. What are the coordinates of the image?

• (-6, -5)

• (-5, 6)

• (5, -6)

• (6, 5)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The vertices of triangle GHI are G(1, 2), H(3, 4), and I(4, 2). The triangle will be reflected across the x-axis. What will be the coordinates of the image point H′?

• (-3, 4)

• (3, -4)

• (-3, -4)

• (3, 4)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Identify the transformation.

• Reflection across y axis
• Reflection across x-axis
• 180 Rotation
• Translation 2 units down

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Reflect Point C over the y-axis:

• (-3, 2)
• (3,2)
• (-2,3)
• (3,0)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5