Reflections Over the X-Axis

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

• changes to its opposite sign

• stays the same

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

If you reflect point (-2,7) over the x-axis, what is its image point?

• (2,7)

• (2,-7)

• (-2,-7)

• (7,-2)

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 x-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

Which transformation is shown?

• Translation

• Reflection over the x-axis

• Reflection over the y-axis

• 90^o clockwise rotation

Tags

CCSS.HSG.CO.B.6

Reflections over the x-axis change the (a)   - (b)   . 

• y-coordinate

• x-coordinate

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A reflection over the x-axis causes the ​ (a)   to stay the same and the ​ (b)   to switch.

The algebraic representation is ​ (c)  

• x-value

• y-value

• (x, y)-->(x, -y)

• (x, y)-->(-x, y)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Reflections over the x-axis change the (a)   - (b)   . 

• y-coordinate

• x-coordinate

• y-axis

• x-axis 

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Describe the transformation

• Reflection over the y-axis

• Reflection over the x-axis

• Rotation 90 degrees clockwise

• Rotation 180 degrees

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