A-A+
In the xy plane is the point (4 -2) on the l
问题详情
In the xy plane, is the point (4, -2) on the line l？
(1) Point (1, 1) is on line l.
(2) The equation x=2-y describes line l.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
B 解析：alone is insufficient because it offers information about only one point on the line. (2) alone is sufficient, because the line it describes includes the point (4, -2).
