四边形A1B1C1D1 A2B2C2D2 A3B3C3D3均为正方形,点A1、A2、A3和点C1、C2、C3分别在直线y=kx+b(k>0)和x轴上,点B3的坐标是(19/4,9/4),求k+b的值
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![四边形A1B1C1D1 A2B2C2D2 A3B3C3D3均为正方形,点A1、A2、A3和点C1、C2、C3分别在直线y=kx+b(k>0)和x轴上,点B3的坐标是(19/4,9/4),求k+b的值](/uploads/image/z/13417992-0-2.jpg?t=%E5%9B%9B%E8%BE%B9%E5%BD%A2A1B1C1D1+A2B2C2D2+A3B3C3D3%E5%9D%87%E4%B8%BA%E6%AD%A3%E6%96%B9%E5%BD%A2%2C%E7%82%B9A1%E3%80%81A2%E3%80%81A3%E5%92%8C%E7%82%B9C1%E3%80%81C2%E3%80%81C3%E5%88%86%E5%88%AB%E5%9C%A8%E7%9B%B4%E7%BA%BFy%3Dkx%2Bb%28k%26gt%3B0%29%E5%92%8Cx%E8%BD%B4%E4%B8%8A%2C%E7%82%B9B3%E7%9A%84%E5%9D%90%E6%A0%87%E6%98%AF%EF%BC%8819%2F4%2C9%2F4%EF%BC%89%2C%E6%B1%82k%2Bb%E7%9A%84%E5%80%BC)
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