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一次函数y=kx+b的图像是一条直线,其中b是直线与y轴交点的纵坐标,如果直线y=kx+b与矩形综合起来再求b的相关值,题目就会增大难度.若充分利用数形结合思想来分析则可以巧妙解决此类问题.
The image of a linear function y = kx + b is a straight line, where b is the ordinate of the intersection of the straight line and the y-axis. If the line y = kx + b is combined with the rectangle and the correlation value of b is found, the problem becomes more difficult. If you take full advantage of the number of combination analysis can be cleverly solve such problems.