浙江省2019年中考数学复习第三章函数及其图像第四节反比例函数课前诊断测试.doc

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1第四节 反比例函数课前诊断测试1已知反比例函数 y 的图象经过点 A(1,2),则 k的值为( )kxA1 B2C2 D12若点 A(1,y 1),B(1,y 2),C(3,y 3)在反比例函数 y 的图象上,则 y1,y 2,y 3的大小关系是( 3x)Ay 1y20,则 x的取值范围在数轴上表示正确的是( )25已知反比例函数 y 的图象的一支位于第一象限,则常数 m的取值范围是_m 1x6在温度不变的条件下,一定质量的气体的压强 p与它的体积 V成反比例当 V200 时,p50;则当p25 时,V_7如图,反比例函数 y 的图象经过矩形 OABC的边 AB的中点 D,则矩形 OABC的面积为_2x8如图,P(m,m)是反比例函数 y 在第一象限内的图象上一点,以 P为顶点作等边PAB,使 AB落在9xx轴上,则POB 的面积为_. 参考答案1C 2.B 3.D 4.A5m1 6.400 7.4 8.9 3 32

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