Reflections and translations

Front

What does the translation rule (x + a, y + b) indicate?

Back

Move the point 'a' units horizontally and 'b' units vertically.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

If a point (x, y) is translated using the rule (x + 3, y - 2), what is the new point?

Back

(x + 3, y - 2)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the image of point A(4, 5) after applying the translation rule (x - 2, y + 3)?

Back

(2, 8)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

How do you reflect a point (x, y) across the x-axis?

Back

The image point will be (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What are the coordinates of point B(3, -4) reflected over the x-axis?

Back

(3, 4)

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 the y-axis?

Back

The image point will be (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What are the coordinates of point C(-5, 2) reflected over the y-axis?

Back

(5, 2)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

If triangle ABC is reflected over the x-axis, how do the y-coordinates of its vertices change?

Back

The y-coordinates change sign.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the image of point D(-1, 3) after reflecting over the x-axis?

Back

(-1, -3)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What does the translation rule (x + 6, y - 7) tell us to do?

Back

Move 6 units right and 7 units down.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5