如图,直线 l 1 的解析表为y=-3x+3,且 l 1 与x轴交于点D,直线 l 2 经过点A,B,直线 l 1 , l 2 交于点C. (1)求点D的坐标; (2)求直线 l 2 的解析表; (3)求△ADC的面积; (4)在直线 l 2 上存在异于点C的另一点P,使得△ADP与△ADC的面积相等,请直接写出点P的坐标.
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