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        2017届中考数学一轮复习第13讲反比例函数专题_ - 癑ֺ文库 d

        ;꣬qڹĺ֮ڕɽ֮mͤҲȺtL̼˵гɽXïģӳңԞxˮΡmoz֮ʢһxһԁԕ顣13v

        һA 1.x>0ry=A.

        5ĈDڣ xC.ڶ

        D.һ

        B.

        2.OcAx1,y1Bx2,y2Ƿy=k0Dϵăɂcx1x20r

        y1y2tһκy=-2x+kĈD󲻽^ǣ

        A.һ

        B.ڶ

        C.

        D.

        3.ͬһֱϵУy?ky?kx?3k0ĈDǣ x

        4.DʾABCDУAB?3,BC?4cPAclA?B?Cķ

        ABBCƄ.ӛPA?xcDֱPAľxytyPxĺDǣ

        A B

        C D

        ;꣬qڹĺ֮ڕɽ֮mͤҲȺtL̼˵гɽXïģӳңԞxˮΡmoz֮ʢһxһԁԕ顣5.y =

        1-2kĈD^c-23tkֵ飨 x

        C.

        D.

        A.6 B.-6

        6.y=

        k?1ĈDλڵڶޣtkȡֵ( ) xA.0 B.2 C.3 D.4 7.֪c

        ڷy?4ĈDϣtxĴСPϵǣ A.C.

        8.֪y?kĈD^cAC23tx??3ry=_____. x

        B.

        D.

        9Dʾ֪һκy=kx4ĈDcxS,ySքeA,Bccy=ڵһރȵĈDcCABCctk= .

        8x

        10֪y?3m?3m______rDăɂ֧ڵһރȣ

        xm______rDÿރySx.

        11.֪P1(x1,y1)P2(x2,y2)ͬһDϵăc.x2?x1?2

        111??t@ı_ʽ . y2y12nչ 12.һκ

        ĈDc

        1ĈD]йctkȡֵx;꣬qڹĺ֮ڕɽ֮mͤҲȺtL̼˵гɽXïģӳңԞxˮΡmoz֮ʢһxһԁԕ顣 .

        13.M22Nb-1-nǷy=^ .

        ġп朽

        14.Vп֪һκy?kx?6ĈDcy??2kĈDABccx2

        kDϵăctһκy=kx+bĈDxAęM˞2.

        1kֵcAˣ 2ДcBޣf.

        15. Dʾֱy=mxcpy?kཻABcAc˞飨12

        x

        1󷴱ı_ʽ

        2Dֱӌmxkrxȡֵ

        x3Ӌ㾀ABL.

        ;꣬qڹĺ֮ڕɽ֮mͤҲȺtL̼˵гɽXïģӳңԞxˮΡmoz֮ʢһxһԁԕ顣

        һA

        1. A 麯y=k=-50,Dλڵڶޣx0rDλڵ.

        2. A ڷ x1x20ry1y2fͬһރȣySx󣬡 k0 һκy=-2x+kĈDcySؓSD^ڶޣ^һ.

        3.A ڲ֪kķ̖}ԷӑՓ

        ry?xĈD

        kڵһޣһκy?kx?3ĈD^һޣ֪A헷;ͬӑՓrr.

        4.B cPABƄӕrcDֱPAľxDALȣұֲ׃D齛^c(04)cxSƽеһlΣcPBCƄӕr PADeS?6l׃S?B.

        5. C c-23뷴y=6.A

        7.D 鷴y?pСxD.

        8.2 cA(C23)y?y=2.

        9.4 һκy=kx4ĈDcyScB Bc˞飨0-4.

        ^cCCD?xScDABCcɵáOABաDAC,8CD?OB?4.OCc˞飨x4y=ɵCc˞飨2,4.

        xx=2y=4y=kx4ɵk=4.k66Уk = C 6,y??.x= C 3y??Уxxx121xy?6xy?12y?Dpһ֧x

        x21-2k1-2k7У3=k=. x-224ĈDڵһޣÿރySxx

        r

        .鮔r





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