如图，点A的坐标为（﹣4，0），直线y= 3 x+n与坐标轴交于点B、C，连接AC，如果∠ACD=90°，则n的值为_1．_刷题宝

题干

如图，点A的坐标为（﹣4，0），直线y= 3 x+n与坐标轴交于点B、C，连接AC，如果∠ACD=90°，则n的值为____．

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−

4

3

3

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