y1=kx+by2=m/xA(-2,1),B(1,n )1=m/-2∴m=-2∴y2= -2/x∴n=-2/1=-2B(1,-2)1=-2k+b-2=k+bk=-1 b=-1∴y1=-x-1(2)-x-1>-2/xx+1-2/x<0(x²+x-2)/x<0(x+2)(x-1)/x<0x<-2 0