When a figure is translated to the left 6 units and up 5 units, the effect on the coordinates of the vertices is as follows:
- Translation to the left 6 units means you subtract 6 from the x-values.
- Translation up 5 units means you add 5 to the y-values.
Thus, the correct description of the effect on the coordinates is:
Subtract 6 units from each x-value and add 5 units to each y-value.