已知一次函数y= - x+6的图像与正比例函数y=(1/2)x的图象交于点(4,a),求(1)a的值(2)这两个函数图象与x轴所围成的三角形面积注意:是y=负x+6!
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![已知一次函数y= - x+6的图像与正比例函数y=(1/2)x的图象交于点(4,a),求(1)a的值(2)这两个函数图象与x轴所围成的三角形面积注意:是y=负x+6!](/uploads/image/z/5276287-55-7.jpg?t=%E5%B7%B2%E7%9F%A5%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0y%3D+-+x%2B6%E7%9A%84%E5%9B%BE%E5%83%8F%E4%B8%8E%E6%AD%A3%E6%AF%94%E4%BE%8B%E5%87%BD%E6%95%B0y%3D%EF%BC%881%2F2%EF%BC%89x%E7%9A%84%E5%9B%BE%E8%B1%A1%E4%BA%A4%E4%BA%8E%E7%82%B9%284%2Ca%29%2C%E6%B1%82%EF%BC%881%EF%BC%89a%E7%9A%84%E5%80%BC%EF%BC%882%EF%BC%89%E8%BF%99%E4%B8%A4%E4%B8%AA%E5%87%BD%E6%95%B0%E5%9B%BE%E8%B1%A1%E4%B8%8Ex%E8%BD%B4%E6%89%80%E5%9B%B4%E6%88%90%E7%9A%84%E4%B8%89%E8%A7%92%E5%BD%A2%E9%9D%A2%E7%A7%AF%E6%B3%A8%E6%84%8F%EF%BC%9A%E6%98%AFy%3D%E8%B4%9Fx%2B6%21)
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