- 精华
- 0
- 积分
- 1650
- 经验
- 1650 点
- 威望
- 164 点
- 金钱
- 164 ¥
- 魅力
- 164
|
LS is on the right track.
Let's say in the above question there are four points: (a, b), (c, d); (2a, 2b), (2c, 2d). The first two points form a line with a slope of k. The last two points form a line with the same slope of K. Are these four points on the same line? They have to. Because if they are not, two points will be off the line formed by the other three (since these two lines are parallel). This is contrary to the decription of the stimulus, which says ONLY one point is off the line formed by 4 points. |
|