题目

如图，正方形的中心在直角坐标系的原点，正方形的边与坐标轴平行，点 是正方形与反比例函数图象的一个交点．已知图中阴影部分的面积等于9，则这个反比例函数的表达式是． 答案：【1】y=3xOn the River Thames there are a number of boat races every year and these have become very popular with the public. Perhaps the best–known of these races is the University Boat Race. This takes place just before Easter every year and is a competition between teams from the Universities of Oxford and Cambridge. They row from Putney to Mertlake, a distance of about four and a quarter miles. This race has been taking place almost every year since 18291.The best – known of these races is ______.A.the Boat Race of the University of OxfordB.the Boat Race of the University of CambridgeC.the Boat Race of the Olympic GamesD.the University Boat Race2.Generally, the Boat Race takes place ______.A.once a yearB.twice a yearC.every three yearsD.every other year3.The words “Putney” and “Mertlake” are ______.A.names of placesB.names of teamsC.names of boat racesD.names of universities