Exploring Transformations: Reflection Techniques

This video tutorial focuses on the geometric transformation known as reflection. It explains the concept of reflection as flipping an image over a designated line, creating a mirrored shape. The tutorial covers reflecting shapes over the x-axis and y-axis, providing practical examples and exercises. It also discusses graphing coordinates and the rules for performing reflections over these axes, emphasizing the changes in coordinates during the transformation.

What is the term used for the line over which an image is flipped in a reflection?

• Axis of Symmetry

• Mirror Line

• Flip Line

• Line of Reflection

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When reflecting a point over the x-axis, what happens to the y-coordinate?

• It remains the same

• It changes to its opposite

• It doubles

• It becomes zero

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If a point (3, 4) is reflected over the x-axis, what will be the new coordinates?

• (-3, -4)

• (3, -4)

• (-3, 4)

• (3, 4)

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When reflecting a point over the y-axis, what happens to the x-coordinate?

• It remains the same

• It changes to its opposite

• It becomes zero

• It doubles

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

If a point (-2, 5) is reflected over the y-axis, what will be the new coordinates?

• (2, -5)

• (-2, -5)

• (2, 5)

• (-2, 5)

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CCSS.8.G.A.3

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What is the first step in graphing a coordinate point?

• Move up or down

• Label the point

• Move left or right

• Plot the point

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When graphing a point, which axis do you move along first?

• Z-axis

• X-axis

• Y-axis

• It doesn't matter

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What is the rule for reflecting a point over the x-axis?

• Change both coordinates

• Keep both coordinates

• Keep the x-coordinate, change the y-coordinate

• Keep the y-coordinate, change the x-coordinate

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What is the rule for reflecting a point over the y-axis?

• Keep both coordinates

• Change both coordinates

• Keep the x-coordinate, change the y-coordinate

• Keep the y-coordinate, change the x-coordinate

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CCSS.8.G.A.3

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If a point (4, -3) is reflected over the y-axis, what will be the new coordinates?

• (4, -3)

• (-4, 3)

• (4, 3)

• (-4, -3)

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5