网址:http://m.1010jiajiao.com/timu_id_4044926[举报]
A.x+y-2=0 B.2x-y-7=0
C.2x+y-5=0 D.x-y-4=0
A.x-y-3=0 B.2x+y-3=0 C.x+y-1=0 D.2x-y-5=0