Unit 7 Test

Triangle ABC is graphed in the xy-coordinate plane, as shown. Triangle ABC is reflected across the x-axis to form triangle A’B’C’. What are the coordinates of C’ after the reflection?

• (3, -2)

• (4, -6)

• (-6, 4)

• (6, -4)

Which statement describes a possible sequence of transformations that transforms figure 1 into figure 2?

• A reflection across the x-axis, followed by a translation of 3 units to the right

• A reflection across the x-axis, followed by a translation of 2 units to the left

• A rotation 180 degrees clockwise about the origin, followed by a translation 2 units to the left

• A rotation 180 degrees clockwise about the origin, followed by a translation 3 units to the right

Pentagon ABCDE is shown in the xy-coordinate plane. Pentagon ABCDE will be rotated 90 degrees clockwise about the point (1, 1) to form pentagon A’B’C’D’E’.

• 
• 
• 
• 

Which answer shows a reflection across the y-axis?

• a
• b
• c
• d

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

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

• (x+8, y+4)
• (x-8, y-4)
• (x+4, y+8)
• (x-4, y-8)

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

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

Definition: The figure before a translation has occurred. 

• Pre-image
• Image
• Translation
• Reflection

Tags

CCSS.8.G.A.1

CCSS.8.G.A.3

Definition: The figure after a translation has occurred. 

• Pre-image
• Image
• Translation
• Reflection

Tags

CCSS.8.G.A.1

CCSS.8.G.A.2

CCSS.8.G.A.3

Where would A' be if you translated A 3 units to the right and 4 units down?

• (-4, 4)
• (-1, 0)
• (0, -1)

Tags

CCSS.8.G.A.1

CCSS.8.G.A.3

Write the rule for this translation:
Slide 3 up and 2 right

• (x, y)---->(x + 3, y + 2)
• (x, y)-----> (x+2, y + 3)
• (x, y)----> (x - 2, y + 3)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5