Reflection Y and X Axis

When a coordinate reflects over the y-axis the x-coordinate...

• changes to its opposite sign

• stays the same

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The blue figure is reflected over the x-axis. True or False?

• True

• False

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the rule for a reflection over the y-axis?

• (x,y)→(-x,y)

• (x,y)→(x,-y)

• (x,y)→(-x,-y)

• (x,y)→(y,x)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Reflect the point over the y-axis. What is the coordinate of its image?

• (-3,3)

• (3,3)

• (-3,-3)

• (3,-3)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Given pre-image point (4,2)

Plot the pre-image & image after a reflection over the y-axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Reflections over the x-axis change the ____-__________. 

• y-coordinate

• x-coordinate

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Graph the triangle A (0,4), B (6,4) C (2, -4) after it has been reflected over the y-axis. Place the three reflected points on the graph provided.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Complete the mapping for a reflection over the y-axis:

(x, y) --> (​ ​ (a)   ,​ ​ (b)   )

• x

• -y

• -x

• y

Tags

reflections

transformations

mappings

Graph the points (-3, 2) (-6, 3) and (-4,6). Reflect the image over the y axis and graph the new points. You should graph a total of 6 points.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Given pre-image point (-2,5)

Plot the pre-image & image after a reflection over the x-axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5