To describe the effect on the coordinates of the vertices of a figure that is translated down 4 units and to the right 3 units, we need to consider how translation affects the x and y coordinates.
- Translating down 4 units means we subtract 4 from the y-coordinate.
- Translating to the right 3 units means we add 3 to the x-coordinate.
Therefore, for each vertex \((x, y)\), after the translation, the new coordinates will be \((x + 3, y - 4)\).
The correct choice is: Add 3 units to each x-value and subtract 4 units from each y-value.