To find the coordinates of the point \( D' \) after reflecting the point \( D \) over the y-axis, you need to negate the x-coordinate of the original point.
If the original coordinates of point \( D \) are \( (x, y) \), then the coordinates of the reflected point \( D' \) will be \( (-x, y) \).
Since you mentioned using an image that I cannot see, I cannot provide the specific coordinates for point \( D' \) without the original coordinates of point \( D \). Please provide the coordinates of point \( D \), and I can help you determine the coordinates of point \( D' \).