初三二次函数题已知抛物线y1=a(x-2)²-4(a≠0)经过点(0,-3),顶点为M.将抛物线y1向上平移b个单位可使平移后得到的抛物线y2经过坐标原点,抛物线y2的顶点为A,与x轴的另一个交点为B.(3)①点p是y
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![初三二次函数题已知抛物线y1=a(x-2)²-4(a≠0)经过点(0,-3),顶点为M.将抛物线y1向上平移b个单位可使平移后得到的抛物线y2经过坐标原点,抛物线y2的顶点为A,与x轴的另一个交点为B.(3)①点p是y](/uploads/image/z/9469580-68-0.jpg?t=%E5%88%9D%E4%B8%89%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E9%A2%98%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy1%3Da%28x-2%29%26%23178%3B-4%28a%E2%89%A00%29%E7%BB%8F%E8%BF%87%E7%82%B9%280%2C-3%29%2C%E9%A1%B6%E7%82%B9%E4%B8%BAM.%E5%B0%86%E6%8A%9B%E7%89%A9%E7%BA%BFy1%E5%90%91%E4%B8%8A%E5%B9%B3%E7%A7%BBb%E4%B8%AA%E5%8D%95%E4%BD%8D%E5%8F%AF%E4%BD%BF%E5%B9%B3%E7%A7%BB%E5%90%8E%E5%BE%97%E5%88%B0%E7%9A%84%E6%8A%9B%E7%89%A9%E7%BA%BFy2%E7%BB%8F%E8%BF%87%E5%9D%90%E6%A0%87%E5%8E%9F%E7%82%B9%2C%E6%8A%9B%E7%89%A9%E7%BA%BFy2%E7%9A%84%E9%A1%B6%E7%82%B9%E4%B8%BAA%2C%E4%B8%8Ex%E8%BD%B4%E7%9A%84%E5%8F%A6%E4%B8%80%E4%B8%AA%E4%BA%A4%E7%82%B9%E4%B8%BAB.%EF%BC%883%EF%BC%89%E2%91%A0%E7%82%B9p%E6%98%AFy)
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