PP-DS-T1-87

[whoisallan]

87. 7824-!-item-!-187;#058&005664

XY向線上一PQR三角形

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

ANS: C

這題時在是不懂在說啥?...有誰可以幫忙只較一下...tks

[Philosophia]

由 (1) + (2) 得到 P(x,y)，求 x + y.