It is -.78125 if you round it it’s 1
It's supposed to be Triangle ZXY but it isnt in the choices.
Answer is choice C: If a line is drawn through point A and point X, then it will bisect line segment BC.
This line is the third missing median of the triangle. A median goes from one vertex to the midpoint of the opposite side. The midpoint cuts the segment in half. For example, median CD cuts segment AB in half (AD = DB). All three medians of a triangle meet at the same point: the centroid
It tells us that if we subtract from one side of an equation, we also must subtract from the other side of the equation to keep the equation the same.