Question

The rectangle ABCD is reflected across the y-axis. What are the
coordinates of the vertex A'?

Answer 1

When a point is reflected across the y-axis, the x-coordinate changes sign, but the y-coordinate remains the same.

Step-by-step explanation:

When a point is reflected across the y-axis, the x-coordinate changes sign, but the y-coordinate remains the same.

Let's say the coordinates of point A are (x, y). When reflected across the y-axis, the x-coordinate becomes -x. Therefore, the coordinates of point A' are (-x, y).

In the case of a rectangle, the vertex A is one of the corners of the rectangle. So, if the coordinates of point A are (x1, y1), the coordinates of the reflected point A' will be (-x1, y1).

Answer 2

The answer would be (-2,5), this is because when we reflect on the Y axis the Y stays the same and X changes and vise versa for the X axis. Then the amount of units away from the y axis is the amount of units more that it’s going to travel. Hope this helps