如图,直线y=-3/4x+6和y=3/4x-2交于点P,直线y=-3/4x+6分别交x轴,y轴于点A,B,直线y=3/4x-2交y轴于点C(1)求直线交点P的坐标;(2)求△PCA的面积
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![如图,直线y=-3/4x+6和y=3/4x-2交于点P,直线y=-3/4x+6分别交x轴,y轴于点A,B,直线y=3/4x-2交y轴于点C(1)求直线交点P的坐标;(2)求△PCA的面积](/uploads/image/z/5276299-67-9.jpg?t=%E5%A6%82%E5%9B%BE%2C%E7%9B%B4%E7%BA%BFy%3D-3%2F4x%2B6%E5%92%8Cy%3D3%2F4x-2%E4%BA%A4%E4%BA%8E%E7%82%B9P%2C%E7%9B%B4%E7%BA%BFy%3D-3%2F4x%2B6%E5%88%86%E5%88%AB%E4%BA%A4x%E8%BD%B4%2Cy%E8%BD%B4%E4%BA%8E%E7%82%B9A%2CB%2C%E7%9B%B4%E7%BA%BFy%3D3%2F4x-2%E4%BA%A4y%E8%BD%B4%E4%BA%8E%E7%82%B9C%EF%BC%881%EF%BC%89%E6%B1%82%E7%9B%B4%E7%BA%BF%E4%BA%A4%E7%82%B9P%E7%9A%84%E5%9D%90%E6%A0%87%EF%BC%9B%EF%BC%882%EF%BC%89%E6%B1%82%E2%96%B3PCA%E7%9A%84%E9%9D%A2%E7%A7%AF)
如图,直线y=-3/4x+6和y=3/4x-2交于点P,直线y=-3/4x+6分别交x轴,y轴于点A,B,直线y=3/4x-2交y轴于点C(1)求直线交点P的坐标;(2)求△PCA的面积
如图,直线y=-3/4x+6和y=3/4x-2交于点P,直线y=-3/4x+6分别交x轴,y轴于点A,B,直线y=3/4x-2交y轴于点C
(1)求直线交点P的坐标;(2)求△PCA的面积
如图,直线y=-3/4x+6和y=3/4x-2交于点P,直线y=-3/4x+6分别交x轴,y轴于点A,B,直线y=3/4x-2交y轴于点C(1)求直线交点P的坐标;(2)求△PCA的面积
(1) y=-3/4x+6
{ 所以交点p坐标(16/3,2);
y=3/4x-2
(2)由题可知:c点坐标(0,-2),a点坐标(8,0),
直线y=3/4x-2交x轴于点(8/3,0)
所以△PCA的面积 s=1/2(8-8/3)x2+1/2(8-8/3)x16/3=176/3.