freesimens 当前离线
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In the xy-plane, region R consists of all the points (x,y) such that 2x+3y = 6. Is the point (r,s) in region R?
(1) 3r+2S=6
(2) r=3 and s=2
I think the answer should be B, but it turns out to be E. Could anyone help me?
himba 当前离线
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