Final answer:
The image of the point (4,-7) after a reflection over the line y=x is (-7,4).
Step-by-step explanation:
To find the image of point (4,-7) after a reflection over the line y=x, we need to switch the x-coordinate with the y-coordinate. This will give us the new coordinates for the reflected point.
So, for the point (4,-7), the new coordinates will be (-7,4).
Therefore, the image of the point (4,-7) after a reflection over the line y=x is (-7,4).