推 cmchen40:x+y=? 07/06 22:38
推 shyuan:問P點的X座標Y座標和 07/07 00:48
87. 7824-!-item-!-187;#058&005664
XY向線上一PQR三角形,大概輪廓,標明PQR相對位置
Q
l
l
P__________R
In the figure above, segments PQ and PR are each parallel to one of the
rectangular coordinate axes. What is the sum of the coordinates of point P ?
(1) The x-coordinate of point Q is -1.
(2) The y-coordinate of point R is 1
這題時在是不懂在說啥?...有誰可以幫忙只較一下...tks
ANS: C
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