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East China Normal University Grade 8 Volume 2 Mathematics
(1) when x = 0, y =-2; When y = 0, the coordinates of point A and point B are (3,0) and (0,2) respectively. OA=3, OB=2. So the area of △AOB is S= 1/2*OA*OB=3. (2) Delta AOB can be divided into two parts with equal area by drawing three straight lines at the vertex of Delta AOB, y =-2/3x, y = 1/3x- 1, y = 4/3x-2.