Final answer:
The y-coordinate of the point (-2,-3) after a 180-degree counterclockwise rotation about the origin will be 3.
Step-by-step explanation:
When a point is rotated 180 degrees about the origin, its coordinates are inverted. This means both the x-coordinate and y-coordinate of the point switch signs. The point (-2,-3) will become (2,3) when rotated 180 degrees counterclockwise about the origin. Therefore, the y-coordinate of the resulting image will be 3.