To find the reflection of the point (12, -10) across the x-axis, we need to change the sign of the y-coordinate. The reflected point will be (12, 10).
Now let's determine the quadrant of the point (12, 10):
- The x-coordinate (12) is positive.
- The y-coordinate (10) is positive.
In the coordinate plane, points with positive x and positive y coordinates lie in Quadrant I.
Therefore, the reflected point (12, 10) is located in Quadrant I.