七年级数学下册变量之间的关系测试题VIP免费

变量之间的关系18,xyx()Ay=12xB.y=18x2C.D.s()t()s=3t2+2t+1t=4()A.28B48C57D88mv12340.012.98.0315.1mvAv=2m-2Bv=m2-14C・v=3m-3Dv=m+1S,S1237oC，124()A5BC.TC0CD524,36.5T37.5123458材(千米)e£4V・d8618632,C865OEFPMN867140C.1201000A.B.C.D.18.11100/150/D912810h(cm)()960/0/V(cm3)310643t(min)1000y124141581234567821242833394246491Byx1312160.49121610y()18?・•191310.5X.(x)20631100212007x/123456176x=3y=1000010000120001300014000180002007xy501.5101122020062008y/^123222312324252612xyAy=12xBy=18xCy=2x27DABCBC5cmDABCA20cm264cm2BC128cm240cm2D1200620072008/5000/25000818yxDy=3x28cmBC16cm64cm220cm240cm2128cm2