一个函数的图象平行于直线y=-2x+1,且过点(-4.2).(1)求此函数的解析 (2)求函数图象与x轴交点A的坐标,与y轴交点B的坐标.(3)求三角形AOB的面积(不用画图,
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![一个函数的图象平行于直线y=-2x+1,且过点(-4.2).(1)求此函数的解析 (2)求函数图象与x轴交点A的坐标,与y轴交点B的坐标.(3)求三角形AOB的面积(不用画图,](/uploads/image/z/12047812-52-2.jpg?t=%E4%B8%80%E4%B8%AA%E5%87%BD%E6%95%B0%E7%9A%84%E5%9B%BE%E8%B1%A1%E5%B9%B3%E8%A1%8C%E4%BA%8E%E7%9B%B4%E7%BA%BFy%3D-2x%2B1%2C%E4%B8%94%E8%BF%87%E7%82%B9%EF%BC%88-4.2%29.%281%29%E6%B1%82%E6%AD%A4%E5%87%BD%E6%95%B0%E7%9A%84%E8%A7%A3%E6%9E%90+%EF%BC%882%EF%BC%89%E6%B1%82%E5%87%BD%E6%95%B0%E5%9B%BE%E8%B1%A1%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E7%82%B9A%E7%9A%84%E5%9D%90%E6%A0%87%2C%E4%B8%8Ey%E8%BD%B4%E4%BA%A4%E7%82%B9B%E7%9A%84%E5%9D%90%E6%A0%87.%EF%BC%883%EF%BC%89%E6%B1%82%E4%B8%89%E8%A7%92%E5%BD%A2AOB%E7%9A%84%E9%9D%A2%E7%A7%AF%EF%BC%88%E4%B8%8D%E7%94%A8%E7%94%BB%E5%9B%BE%2C)
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