Author(s): WANG Cheng
Pages: 60-63+112-113
Year: 2009 Issue:  Z1
Journal: School Journal of Mathematics
Keyword:  图象检测; 正比例函数; 函数关系式; 反比例函数; 函数图象; 直线; 一次函数; 取值范围; 四象限; 平面直角坐标系;