1.(0,0)带入y=(2m-3)x+m+2得m=-2
2.(-1,0)带入y=(2m-3)x+m+2得3-2m+m+2=0,m=5
3.2m-3=-1,m=1
4.x=0,y=m+2>0,m>-2
y=0,x=(m+2)/(3-2m) >0 ,-2
1.(0,0)带入y=(2m-3)x+m+2得m=-2
2.(-1,0)带入y=(2m-3)x+m+2得3-2m+m+2=0,m=5
3.2m-3=-1,m=1
4.x=0,y=m+2>0,m>-2
y=0,x=(m+2)/(3-2m) >0 ,-2