...1,0)、B(3,0).现同时将点A,B分别向上平移2个单
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发布时间：2024-09-29 22:08
共1个回答
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时间：2024-10-30 18:18
∴点C、D的坐标分别为（0，2），（4，2），
S四边形ABDC=4×2=8；
（2）点P在x轴上时，∵S△PAC=14S四边形ABDC，
∴12AP×2=14×8，
解得AP=2，
当点P在点A的左边时，-1-2=-3，
点P的坐标为（-3，0），
点P在点A的右边时，-1+2=1，
点P的坐标为（1，0）；
点P在y轴上时，∵S△PAC=14S四边形ABDC，
∴12CP×1=14×8，
解得CP=4，
点P在点C的上方时，2+4=6，
点P的坐标为（0，6），
点P在点C的下方时，2-4=-2，
点P的坐标为（0，-2），
综上所述，点P的坐标为（-3，0）或（1，0）或（0，6）或（0，-2）；
（3）∵OG=3CG，
∴OG=31+3×2=32，
∴点G的坐标为（0，32），
∵OF=2BF，
∴OF=21+2×3=2，
∴点F的坐标为（2，0），
易求直线CF的解析式为y=-x+2，
直线BG的解析式为y=-12x+32，
联立y＝?x+2y＝?12x+32，
解得x＝1已赞过已踩过你对这个回答的评价是？评论收起 ._1uevpeq{zoom:1;background-color:#fff;border:0;margin-bottom:10px;padding:30px 0 20px 42px;position:relative}._1uevpeq.ec-1841{padding:20px 0}._1uevpeq.ec-2246{padding:20px 0 10px}.ec-1841 .y7we4hu{font-size:16px;margin-bottom:-5px}.y7we4hu{color:#7a8f9a;height:25px;line-height:25px;overflow:hidden;position:relative}.y7we4hu h2{margin:0;padding:0}.y7we4hu:after{clear:both;content:" ";display:block;height:0;visibility:hidden}a.tycfu7u{color:#666;float:right;font-size:12px;margin-left:8px;text-decoration:none}.hhhv6ex{color:#666;font-size:13px;line-height:normal;line-height:20px;margin-top:10px}.vnsdjzp{margin-top:15px;position:relative}.vnsdjzp h3{font-weight:400;padding:0}.vnsdjzp a{text-decoration:none}.vnsdjzp em{color:#d81419;font-style:normal}.ec-2246 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