Learning to reflect a line over the y axis

The video tutorial explains how to reflect points over the Y axis in a coordinate plane. It begins by discussing the concept of reflection and how it acts like a mirror. The tutorial then explains how the X coordinate changes sign during reflection over the Y axis, while the Y coordinate remains the same. Practical examples are provided to illustrate these changes, emphasizing the importance of labeling points correctly. The tutorial concludes with a brief engagement with students, ensuring they understand the material.

What is the initial step in reflecting a point over the Y-axis?

• Change the Y-coordinate to its opposite sign

• Change the X-coordinate to its opposite sign

• Swap the X and Y coordinates

• Keep both coordinates the same

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

• It swaps with the X-coordinate

• It remains unchanged

• It changes to its opposite sign

• It becomes zero

What is the result of reflecting the point (-4, 1) over the Y-axis?

• (4, -1)

• (-4, -1)

• (-4, 1)

• (4, 1)

Why is it important to label the reflected points correctly?

• To ensure the graph looks colorful

• To make the graph symmetrical

• To avoid confusion and accurately represent transformations

• To match the original points

How does the Y-axis function in the context of reflection?

• As a point of origin

• As a horizontal axis

• As a divider of quadrants

• As a line of symmetry