(初三数学)在平面直角坐标系xOy中,已知抛物线y=a{x}^{2}+4ax+c(a≠0)经过A(0,4),B(-3,1)两点,顶点为C.(1)求该抛物线的表达式及点C的坐标(2)将(1)中求得的抛物线沿y轴向上平移m(m>0)个单
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![(初三数学)在平面直角坐标系xOy中,已知抛物线y=a{x}^{2}+4ax+c(a≠0)经过A(0,4),B(-3,1)两点,顶点为C.(1)求该抛物线的表达式及点C的坐标(2)将(1)中求得的抛物线沿y轴向上平移m(m>0)个单](/uploads/image/z/2668874-50-4.jpg?t=%EF%BC%88%E5%88%9D%E4%B8%89%E6%95%B0%E5%AD%A6%EF%BC%89%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BBxOy%E4%B8%AD%2C%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Da%7Bx%7D%5E%7B2%7D%2B4ax%2Bc%28a%E2%89%A00%29%E7%BB%8F%E8%BF%87A%280%2C4%29%2CB%28-3%2C1%29%E4%B8%A4%E7%82%B9%2C%E9%A1%B6%E7%82%B9%E4%B8%BAC.%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%A5%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%8F%8A%E7%82%B9C%E7%9A%84%E5%9D%90%E6%A0%87%EF%BC%882%EF%BC%89%E5%B0%86%EF%BC%881%EF%BC%89%E4%B8%AD%E6%B1%82%E5%BE%97%E7%9A%84%E6%8A%9B%E7%89%A9%E7%BA%BF%E6%B2%BFy%E8%BD%B4%E5%90%91%E4%B8%8A%E5%B9%B3%E7%A7%BBm%EF%BC%88m%3E0%EF%BC%89%E4%B8%AA%E5%8D%95)
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