2. 外语
  3. △RST lies in the XY-plane and points R and T have (x, y) coordinates (0,0) and (6,0) , respectively. The area of △RST is 12. Co

△RST lies in the XY-plane and points R and T have (x, y) coordinates (0,0) and (6,0) , respectively. The area of △RST is 12. Co

admin2009-05-19  101
问题 △RST lies in the XY-plane and points R and T have (x, y) coordinates (0,0) and (6,0) , respectively. The area of △RST is 12.

Column A                          Column B
The x-coordinate of R             The y-coordinate of S
选项 A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given
答案D
解析 △RST位于XY坐标平面中，顶点R和T的坐标(coordinate)分别是(0，0)和(6，0)。△RST的面积为12。
解：本题的正确答案是(D)。由△RST的面积为12，RT长度为6，可以推出S点的纵坐标为±4，而横坐标则为直线y=+4和y=-4上的任一点，所以本题为无法判断。
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本试题收录于： GRE QUANTITATIVE题库GRE分类
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