Reflections on the Coordinate Plane

Front

What is a reflection in the coordinate plane?

Back

A reflection in the coordinate plane is a transformation that flips a figure over a line, creating a mirror image.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What are the two main axes in the coordinate plane?

Back

The two main axes are the x-axis (horizontal) and the y-axis (vertical).

Tags

CCSS.5.G.A.1

Front

How do you reflect a point over the x-axis?

Back

To reflect a point (x, y) over the x-axis, change the sign of the y-coordinate, resulting in (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

How do you reflect a point over the y-axis?

Back

To reflect a point (x, y) over the y-axis, change the sign of the x-coordinate, resulting in (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What happens to the coordinates of a point when it is reflected over both axes?

Back

When a point (x, y) is reflected over both axes, the coordinates change to (-x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

If point A is at (3, 4), what is A' when reflected over the x-axis?

Back

A' is (3, -4).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

If point B is at (-2, -5), what is B' when reflected over the y-axis?

Back

B' is (2, -5).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the result of reflecting point C (1, 2) over both axes?

Back

C' is (-1, -2).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

If triangle ABC is reflected over the y-axis, what happens to the coordinates of point A (4, 3)?

Back

Point A becomes A' (-4, 3).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the ordered pair for point D (4, -5) reflected over both axes?

Back

D' is (-4, 5).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5