In the image you provided, we have a point $D(3, -9)$ on the coordinate plane, and the task is to reflect this point over the x-axis.

To reflect a point across the x-axis, you change the sign of the y-coordinate, while the x-coordinate remains unchanged.

So, for point $D(3, -9)$, after reflection over the x-axis, the new coordinates will be:

$D'(3, 9)$

Thus, the image of point $D$ after a reflection over the x-axis will be $D'(3, 9)$.

Would you like further explanations or help with anything else related to this?