用图象法解方程2x-y-5=0,x+y-1=0,

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用图象法解方程2x-y-5=0,x+y-1=0,用图象法解方程2x-y-5=0,x+y-1=0,用图象法解方程2x-y-5=0,x+y-1=0,由2x-y-5=0得:   

用图象法解方程2x-y-5=0,x+y-1=0,
用图象法解方程2x-y-5=0,x+y-1=0,

用图象法解方程2x-y-5=0,x+y-1=0,
由2x-y-5=0得:   y=2X-5
    由x+y-1=0,得   y=-X+1,
    图象如下,直线y=2X-5与直线 y=-X+1,的交点A(2,-1)就是方程组的解.即X=2,y=-1.