Let X, Y and Z be points such that \(\frac{XZ}{XY} = \frac{ZY}{XY} = \frac{1}{2}\) If Y = (1,7), Z = (-1,-7), then what is the sum of the coordinates of X?

X = (2,-4), so the sum of the coordinates is 2 + (-4) = -2.

that was wrong, thank you though