Final answer:
After a 90-degree counterclockwise rotation around the origin, the new coordinates of point A (-4,3) become (-3,-4).
Step-by-step explanation:
The student has asked about the new coordinates of point A after it has been rotated 90 degrees counterclockwise around the origin (0,0) in the Cartesian plane. To perform a 90-degree counterclockwise rotation around the origin, we can apply the rotation matrix or switch the x and y coordinates and change the sign of the former x-coordinate. In this case, point A is located at (-4,3). After a 90-degree counterclockwise rotation, the new coordinates of point A will be (-3,-4).