Reflecting a triangle over the y axis

The video tutorial explains how to reflect geometric figures over the Y axis. It begins with an introduction to the concept of reflection, followed by a detailed explanation of the rules for reflecting over the Y axis. The instructor then demonstrates how to apply these rules to specific points, transforming them into their reflected counterparts. Finally, the tutorial shows how to plot these reflected points on a graph, providing a visual representation of the reflection process.

What happens to the X-coordinate of a point when it is reflected over the Y-axis?

• It changes sign.

• It remains the same.

• It becomes zero.

• It doubles in value.

If point A is at (-1, -3), what will be the coordinates of A' after reflecting over the Y-axis?

• (1, -3)

• (1, 3)

• (-1, -3)

• (-1, 3)

Which of the following points is the reflection of B(3, -4) over the Y-axis?

• (-3, 4)

• (3, -4)

• (3, 4)

• (-3, -4)

After reflecting point C(1, -5) over the Y-axis, what are the new coordinates?

• (-1, 5)

• (1, 5)

• (-1, -5)

• (1, -5)

What is the purpose of plotting the reflected points on a graph?

• To verify the reflection visually.

• To find the midpoint of the points.

• To change the coordinates again.

• To calculate the distance between points.