Practice for Lesson 3-1

Flipping a figure is a ...

• Rotation

• Reflection

• Dilation

• Translation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Is the picture being reflected in the y-axis or x-axis?

• y-axis
• x-axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Suppose the equation of line s is y = 2. What are the coordinates of A' of ΔA'B'C' for R_s?

• (­­–1, –4)

• (­­–1, 3)

• (­­–3, 5)

• (­­2, 5)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

When you reflect over the y axis, what stays the same?

• x stays the same

• y stays the same

• z stays the same

• q stays the same

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which answer shows a reflection across the x-axis?

• d
• c
• b
• a

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

After a reflection of the figure, the image vertices are A'(5, 1), B'(3, –1), and C'(7, –1). What is the line of reflection?

• y = 2

• x = 2

• y = –x

• y = 2x

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

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

What would be the coordinates of point K if it was reflected over the x-axis?

• (-5, -2)

• (-5, 2)

• (5, -2)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

B(-2, -4)
Reflect over the line y = x

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the rule used to transform ΔABC to its image?

A(−3, 5), B(2, 8), C(−4, −5) and A'(−3, −5), B'(2, −8), C'(−4, 5)

• Rm(x, y) = (−y, −x), where the equation of line m is y = −x

• Rn(x, y) = (y, x), where the equation of line n is y = −x

• Ry-axis(x, y) = (−x, y)

• Rx-axis(x, y) = (x, −y)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5