设A={(x,y)/y=4x+6},B={ (x,y)/y=3x-8},则A交B= A.{(2,-1)} B.{(2,-2)} C.{(3,-1)} D.{(4,2)}.
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![设A={(x,y)/y=4x+6},B={ (x,y)/y=3x-8},则A交B= A.{(2,-1)} B.{(2,-2)} C.{(3,-1)} D.{(4,2)}.](/uploads/image/z/1016374-22-4.jpg?t=%E8%AE%BEA%3D%7B%EF%BC%88x%2Cy%EF%BC%89%2Fy%3D4x%2B6%7D%2CB%3D%7B+%28x%2Cy%29%2Fy%3D3x-8%7D%2C%E5%88%99A%E4%BA%A4B%3D+A.%7B%282%2C-1%29%7D+B.%7B%282%2C-2%29%7D+C.%7B%283%2C-1%29%7D+D.%7B%284%2C2%29%7D.)
设A={(x,y)/y=4x+6},B={ (x,y)/y=3x-8},则A交B= A.{(2,-1)} B.{(2,-2)} C.{(3,-1)} D.{(4,2)}.
设A={(x,y)/y=4x+6},B={ (x,y)/y=3x-8},则A交B= A.{(2,-1)} B.{(2,-2)} C.{(3,-1)} D.{(4,2)}.
设A={(x,y)/y=4x+6},B={ (x,y)/y=3x-8},则A交B= A.{(2,-1)} B.{(2,-2)} C.{(3,-1)} D.{(4,2)}.
y=4x+6与y=3x-8相减得x=-14,
所以y=4x+6=-50,
答案应是{(-14,-50)}.