Reflection over x-axis and y-axis - Find the coordinates.

Front

What is the reflection of a point (x, y) over the x-axis?

Back

The reflection of a point (x, y) over the x-axis is (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the reflection of a point (x, y) over the y-axis?

Back

The reflection of a point (x, y) over the y-axis is (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Reflect (2, 1) over the x-axis.

Back

(2, -1)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Reflect (-2, 6) over the y-axis.

Back

(2, 6)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Reflect (9, -5) over the x-axis.

Back

(9, 5)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Reflect (5, 9) over the y-axis.

Back

(-5, 9)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

Reflect (8, 4) over the y-axis.

Back

(-8, 4)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

If a point is reflected over the x-axis, what happens to its y-coordinate?

Back

The y-coordinate changes sign.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

If a point is reflected over the y-axis, what happens to its x-coordinate?

Back

The x-coordinate changes sign.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the general rule for reflecting a point (x, y) over the x-axis?

Back

The general rule is (x, y) -> (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5