在反比例函数y=k/x(后≠0)中,每一组对应值x、y的乘积为非零常数k,由此可推出k的几何意义:过双曲线y=k/x(k≠0)上任意一点引x轴、y轴的垂线,所得矩形面积为|k|.这个简单而有用的结论,较好地体现了数形结合,是解决反比例函数问题的有力的 In the inverse function y = k / x (post ≠ 0), the product of each set of corresponding values ​​x, y is a non-zero constant k, from which we can derive the geometric meaning of k: hyperbolic y = k / x ≠ 0) at any point on the x-axis, y-axis perpendicular to the resulting rectangle area | k | This simple and useful conclusion, better reflect the combination of number is to solve the problem of inverse proportion function