Answer:
centroid = (3, 2)
Step-by-step explanation:
The centroid of a triangle is the point of intersection of the medians.
Given that S (3, 1) is the middle point of QR, this indicates that triangle PQR is an isoceles triangle with sides QP = PR and base QR. Therefore, the x-coordinate of the centroir will be x = 3.
Vertical distance between S and P = 3 units
Therefore, centroid will be 1/3 of SP. 1/3 of 3 = 1.
Therefore, y-coordinate of centroid = 1 + 1 = 2.