i need yo find the median of a triangle between the distance of JV

i need yo find the median of a triangle between the distance of JV

Triangle ABC has vertices A(3,4), B(-5,2), and C(1,-4). Determine the equation of AE, the altitude from A to BC.

U is the centroid

Find the length of the median of a triangle from point C (8,6). The other 2 points form the base A(0,0) and B (5,0). The key says the answer is 9.