in the xy plane, region R consists of all the point all the point such that 2x+3y=6, is the point (r,s) in the region?
(1).3r+2s=6
(2)r=3, s=2
请教此题能不能选B? 因为这一点不可能在直线2x+3y=6 上啊
我认为可以的.
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