Reflections in Geometry

Plot (-3, -4) then plot its REFLECTION over the y-axis

Tags

CCSS.6.NS.C.6B

What is the first step in reflecting an object across the Y-axis?

• Change the sign of the Y values.

• Draw a new coordinate plane.

• Move the object to the right side.

• Identify the Y-axis on the coordinate plane.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which point remains on the same side of the Y-axis before and after reflection across the Y-axis?

• None of the points

• Point C

• Point B

• Point A

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

After reflecting across the Y-axis, what happens to the X values of the points?

• Their absolute values decrease.

• They become zero.

• Their signs become opposite.

• They remain unchanged.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which of the following points is located at positive 4, negative 2 after being reflected across the Y-axis?

• None of the above

• Point C

• Point B

• Point A

Tags

CCSS.6.NS.C.6B

What remains the same when reflecting a point across the Y-axis?

• The distance from the X-axis

• The signs of both coordinates

• The Y values and their signs

• The X values

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the rule for reflecting points across the Y-axis?

• X values change sign, Y values stay the same.

• Neither X nor Y values change sign.

• Y values change sign, X values stay the same.

• Both X and Y values change sign.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

How do you reflect a point across the X-axis?

• Change the sign of the X values.

• Keep the Y values the same.

• Change the sign of the Y values.

• Move the point closer to the Y-axis.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

After reflecting across the X-axis, what happens to the Y values?

• They double in value.

• They remain unchanged.

• Their signs become opposite.

• They become zero.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the effect of reflecting an object across the X-axis on its X values?

• The X values are doubled.

• The X values are halved.

• The X values remain the same.

• The X values change sign.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5