1) is divided into equal areas, so OC=OA, because two triangles are equal in height and are both OB.

The coordinates of point A (2,0) can be known from y=-x+2, so the coordinates of point C (1 0) and point B (0,2).

Therefore, the analytical formula of intersection C is y=2-2x.

2) Similarly, it is only divided into the area of 1:5, so there are two situations. First, the area of OBC is five times that of ABC, and second, the area of ABC is five times that of OBC, so there are two answers. The algorithm is the same as above, so I won't say much.