(M-2)X-(2M-1)Y-(3M-4)=0
Y=(M-2)X/(2M-1)-(3M-4)/(2M-1)
截距是3
-(3M-4)/(2M-1)=3
-3M+4=6M-3
M=7/9
斜率是1
(M-2)/(2M-1)=1
M-2=2M-1
M=-1
(M-2)X-(2M-1)Y-(3M-4)=0
Y=(M-2)X/(2M-1)-(3M-4)/(2M-1)
截距是3
-(3M-4)/(2M-1)=3
-3M+4=6M-3
M=7/9
斜率是1
(M-2)/(2M-1)=1
M-2=2M-1
M=-1