The midpoint between two points on a graph can be found by averaging their corresponding coordinates. In this case, the points are A and C.
The x-coordinate of point A is -5 and the x-coordinate of point C is 1. To find the midpoint in the x-direction, add these values together and divide by 2: (-5 + 1)/2 = -2. The y-coordinate of point A is 7 and the y-coordinate of point C is -7. To find the midpoint in the y-direction, add these values together and divide by 2: (7 - 7)/2 = 0.
Therefore, the midpoint between A and C is (-2, 0). The point labeled O is also labeled as (0.5, 0.5), so it is not the midpoint between A and C.