若直线y=一2x一4与直线y=4x+b的交点在第三象限,求b得取值范围,
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![若直线y=一2x一4与直线y=4x+b的交点在第三象限,求b得取值范围,](/uploads/image/z/8500557-21-7.jpg?t=%E8%8B%A5%E7%9B%B4%E7%BA%BFy%3D%E4%B8%802x%E4%B8%804%E4%B8%8E%E7%9B%B4%E7%BA%BFy%3D4x%2Bb%E7%9A%84%E4%BA%A4%E7%82%B9%E5%9C%A8%E7%AC%AC%E4%B8%89%E8%B1%A1%E9%99%90%2C%E6%B1%82b%E5%BE%97%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%2C)
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