反比例函数是初中数学中三大函数之一,以反比例函数为背景设计的新题型也随处可见,现结合中考试题分类说明,供同学们参考借鉴.例1(2014·滨州)如图1,菱形OABC的顶点O是原点,顶点B在y轴上,菱形的两条对角线的长分别是6和4.反比例函数y=k/x(x<0)的图 The inverse proportion function is one of the three major functions of junior high school mathematics, and the new type of questions are designed everywhere with the inverse proportion function as the background. Now we combine the middle school exam questions with the classifications for the students to learn from. Example 1 (Binzhou, 2014) The vertex O of the diamond OABC is the origin, the vertex B is on the y-axis, and the lengths of the two diagonals of the diamond are 6 and 4. The inverse scale function y = k / x (x <0)