二元一次方程组在解决一次函数问题中有三个重要应用:一、确定交点坐标例1如图1,两直线y=-3/5x+6和y=x-2与y轴分别交于A、B.求出两直线的交点C的坐标及△ABC的面积.解析:在平面直角坐标系中,两函数图象交点的含义是指该点的坐标同时满足两个函数关系式,也即两函数关系式联立形 The binary system of primary equations has three important applications in solving the problem of a linear function: First, determine the coordinates of the intersection example 1 In Figure 1, the two lines y=-3/5x+6 and y=x-2 and the y axis intersect at A respectively B. Find the coordinates of the intersection point C of the two straight lines and the area of ​​△ABC. Analyze: In the plane rectangular coordinate system, the meaning of the intersection of two function images means that the coordinates of the point satisfy two functional relations at the same time, that is, Two function relations