已知平面直角坐标系,y=3/4x+3与y轴交于点A,点M在y=3/2x+3上,且MO=MA.y=x²+bx+c经过点A、M一求线段AM的长二求这个二次函数的解析式三如果点B在y轴上,且位于点A下方,点C在上述二次函数的图像上,
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![已知平面直角坐标系,y=3/4x+3与y轴交于点A,点M在y=3/2x+3上,且MO=MA.y=x²+bx+c经过点A、M一求线段AM的长二求这个二次函数的解析式三如果点B在y轴上,且位于点A下方,点C在上述二次函数的图像上,](/uploads/image/z/5219023-31-3.jpg?t=%E5%B7%B2%E7%9F%A5%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%2Cy%3D3%2F4x%2B3%E4%B8%8Ey%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9A%2C%E7%82%B9M%E5%9C%A8y%3D3%2F2x%2B3%E4%B8%8A%2C%E4%B8%94MO%3DMA.y%3Dx%26%23178%3B%2Bbx%2Bc%E7%BB%8F%E8%BF%87%E7%82%B9A%E3%80%81M%E4%B8%80%E6%B1%82%E7%BA%BF%E6%AE%B5AM%E7%9A%84%E9%95%BF%E4%BA%8C%E6%B1%82%E8%BF%99%E4%B8%AA%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%E4%B8%89%E5%A6%82%E6%9E%9C%E7%82%B9B%E5%9C%A8y%E8%BD%B4%E4%B8%8A%2C%E4%B8%94%E4%BD%8D%E4%BA%8E%E7%82%B9A%E4%B8%8B%E6%96%B9%2C%E7%82%B9C%E5%9C%A8%E4%B8%8A%E8%BF%B0%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E5%9B%BE%E5%83%8F%E4%B8%8A%2C)
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