中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.下列函数中y是x的反比例函数的是（ ）
A:  |
B: y= |
C:  |
D: y= |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55o2u5Y+N5q+U5L6L5Ye95pWw55qE5a6a5LmJ77yM5Y+v5b6X562U5qGI77yO
- 答案：Qw==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.下列关系中，两个量之间为反比例函数关系的是（ ）
| A: 正方形的面积S与边长a的关系 |
| B: 正方形的周长l与边长a的关系 |
| C: 矩形的长为a，宽为20，其面积S与a的关系 |
| D: 矩形的面积为40，长a与宽b之间的关系 |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55o2u5q+P5LiA5Liq6YCJ6aG555qE6aKY5oSP77yM5YiX5Ye65pa556iL77yM54S25ZCO55Sx5Y+N5q+U5L6L5Ye95pWw55qE5a6a5LmJ6L+b6KGM5LiA5LiA6aqM6K+B5Y2z5Y+v77yO
- 答案：RA==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.下列命题错误的是（ ）
| A: 如果y是x的反比例函数，那么x也是y的反比例函数． |
| B: 如果y是z的反比例函数，z是x的正比例函数，且x≠0，那么y是x的反比例函数 |
| C: 如果y是z的正比例函数，z是x的反比例函数，且x≠0，那么y是x的反比例函数 |
| D: 如果y是z的反比例函数，z是x的反比例函数，那么y是x的反比例函数 |
一次做对，真牛！
+5奖励规则>
- 提示1：5b2i5aaCeT08aW1nIHdpZHRoPTcgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQjAvNzIvckJBQ0UxVmluUER5NThNU0FBQUJXVkFSWHk4NDU3LnBuZyI+77yIa+S4uuW4uOaVsO+8jGviiaAw77yJ55qE5Ye95pWw56ew5Li65Y+N5q+U5L6L5Ye95pWw77yM5YW25LiteOaYr+iHquWPmOmHj++8jHnmmK/lh73mlbDvvIzoh6rlj5jph49455qE5Y+W5YC86IyD5Zu05piv5LiN562J5LqOMOeahOS4gOWIh+WunuaVsO+8jg==
- 答案：RA==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.若y与x成反比例，x与z成反比例，则y是z的（ ）
| A: 正比例函数 |
| B: 反比例函数 |
| C: 一次函数 |
| D: 不能确定 |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55o2u5Y+N5q+U5L6L5Ye95pWw55qE5a6a5LmJ5YiG5Yir5YaZ5Ye655u45bqU55qE6Kej5p6Q5byP77yM5qC55o2u5bi46KeB5Ye95pWw55qE5LiA6Iis5b2i5byP5Yik5pateeS4jnrnmoTlhbPns7vljbPlj6/vvI4=
- 答案：QQ==
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
