(1)两条平行直线4x-5y-3=0与4x-5y-6=0之间的距离为 (2)若方程x+y=k(1)两条平行直线4x-5y-3=0与4x-5y-6=0之间的距离为(2)若方程x+y=k-6表示一个圆,则k的取值范围是
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![(1)两条平行直线4x-5y-3=0与4x-5y-6=0之间的距离为 (2)若方程x+y=k(1)两条平行直线4x-5y-3=0与4x-5y-6=0之间的距离为(2)若方程x+y=k-6表示一个圆,则k的取值范围是](/uploads/image/z/11520358-70-8.jpg?t=%EF%BC%881%EF%BC%89%E4%B8%A4%E6%9D%A1%E5%B9%B3%E8%A1%8C%E7%9B%B4%E7%BA%BF4x%EF%BC%8D5y-3%3D0%E4%B8%8E4x-5y-6%3D0%E4%B9%8B%E9%97%B4%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BA+%EF%BC%882%EF%BC%89%E8%8B%A5%E6%96%B9%E7%A8%8Bx%EF%BC%8By%3Dk%EF%BC%881%EF%BC%89%E4%B8%A4%E6%9D%A1%E5%B9%B3%E8%A1%8C%E7%9B%B4%E7%BA%BF4x%EF%BC%8D5y-3%3D0%E4%B8%8E4x-5y-6%3D0%E4%B9%8B%E9%97%B4%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BA%EF%BC%882%EF%BC%89%E8%8B%A5%E6%96%B9%E7%A8%8Bx%EF%BC%8By%3Dk-6%E8%A1%A8%E7%A4%BA%E4%B8%80%E4%B8%AA%E5%9C%86%2C%E5%88%99k%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF)
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