15.16.17,

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15.16.17,15.16.17, 15.16.17,15题1,y-y1=(x-x1)(y2-y1)/(x2-x1),把A,B两点坐标代进去得直线方程为x-y+2=0

15.16.17,
15.16.17,
 

15.16.17,
15 题1,y-y1=(x-x1)(y2-y1)/(x2-x1),把A,B两点坐标代进去得直线方程为x-y+2=0

15.16.17, 15.16.17题, 15.16.17题, 13.14.15.16.17题 13.14.15.16.17选啥 15.16.17题 11.12.13.14.15.16.17, 13.14.15.16.17题 13.14.15.16.17页 15.16.17题会哪道讲一下, 15.16.17题 15.16.17题, 数学15.16.17题 15.16.17题 15.16.17!急 15.16.17答案,谢谢 13.14.15.16.17题答案 15.16.17题 怎么写?