如图,在矩形ABCD中,AB=m(m是大于0的常数),BC=8,E为线段BC上的动点(不与B、C重合).连结DE,作EF⊥作EF⊥DE,EF与射线BA交于点F,设CE=x,BF=y.(1)求y关于x的函数关系式; (2)若m=8,求x为何值时,y
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![如图,在矩形ABCD中,AB=m(m是大于0的常数),BC=8,E为线段BC上的动点(不与B、C重合).连结DE,作EF⊥作EF⊥DE,EF与射线BA交于点F,设CE=x,BF=y.(1)求y关于x的函数关系式; (2)若m=8,求x为何值时,y](/uploads/image/z/11679482-2-2.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E7%9F%A9%E5%BD%A2ABCD%E4%B8%AD%2CAB%3Dm%EF%BC%88m%E6%98%AF%E5%A4%A7%E4%BA%8E0%E7%9A%84%E5%B8%B8%E6%95%B0%EF%BC%89%2CBC%3D8%2CE%E4%B8%BA%E7%BA%BF%E6%AE%B5BC%E4%B8%8A%E7%9A%84%E5%8A%A8%E7%82%B9%EF%BC%88%E4%B8%8D%E4%B8%8EB%E3%80%81C%E9%87%8D%E5%90%88%EF%BC%89%EF%BC%8E%E8%BF%9E%E7%BB%93DE%2C%E4%BD%9CEF%E2%8A%A5%E4%BD%9CEF%E2%8A%A5DE%2CEF%E4%B8%8E%E5%B0%84%E7%BA%BFBA%E4%BA%A4%E4%BA%8E%E7%82%B9F%2C%E8%AE%BECE%3Dx%2CBF%3Dy%EF%BC%8E%EF%BC%881%EF%BC%89%E6%B1%82y%E5%85%B3%E4%BA%8Ex%E7%9A%84%E5%87%BD%E6%95%B0%E5%85%B3%E7%B3%BB%E5%BC%8F%EF%BC%9B+%EF%BC%882%EF%BC%89%E8%8B%A5m%3D8%2C%E6%B1%82x%E4%B8%BA%E4%BD%95%E5%80%BC%E6%97%B6%2Cy)
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