帮我解数学题,用初中知识.1.求函数y=x+2,与=-x-1的交点坐标,并求这两直线与两坐标轴所围成的三角形面积.2.求直线y=2x+1向下平移两个单位后所得到的关系式,再求平移后的直线与两坐标轴形成
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![帮我解数学题,用初中知识.1.求函数y=x+2,与=-x-1的交点坐标,并求这两直线与两坐标轴所围成的三角形面积.2.求直线y=2x+1向下平移两个单位后所得到的关系式,再求平移后的直线与两坐标轴形成](/uploads/image/z/3014060-68-0.jpg?t=%E5%B8%AE%E6%88%91%E8%A7%A3%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E7%94%A8%E5%88%9D%E4%B8%AD%E7%9F%A5%E8%AF%86.1.%E6%B1%82%E5%87%BD%E6%95%B0y%3Dx%2B2%2C%E4%B8%8E%3D-x-1%E7%9A%84%E4%BA%A4%E7%82%B9%E5%9D%90%E6%A0%87%2C%E5%B9%B6%E6%B1%82%E8%BF%99%E4%B8%A4%E7%9B%B4%E7%BA%BF%E4%B8%8E%E4%B8%A4%E5%9D%90%E6%A0%87%E8%BD%B4%E6%89%80%E5%9B%B4%E6%88%90%E7%9A%84%E4%B8%89%E8%A7%92%E5%BD%A2%E9%9D%A2%E7%A7%AF.2.%E6%B1%82%E7%9B%B4%E7%BA%BFy%3D2x%2B1%E5%90%91%E4%B8%8B%E5%B9%B3%E7%A7%BB%E4%B8%A4%E4%B8%AA%E5%8D%95%E4%BD%8D%E5%90%8E%E6%89%80%E5%BE%97%E5%88%B0%E7%9A%84%E5%85%B3%E7%B3%BB%E5%BC%8F%2C%E5%86%8D%E6%B1%82%E5%B9%B3%E7%A7%BB%E5%90%8E%E7%9A%84%E7%9B%B4%E7%BA%BF%E4%B8%8E%E4%B8%A4%E5%9D%90%E6%A0%87%E8%BD%B4%E5%BD%A2%E6%88%90)
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