2021-2022学年内蒙古鄂尔多斯市鄂托克旗中考押题数学预测卷含解析及点睛

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,ª!|S=xy=k,$ᦑBஹD⌱⚗┯Üpঞ0,PᙠBCÒÓ2SÞtḄßᜧ⌲áâeᦑC⌱⚗┯Ü.ᦑ⌱A.ὃ,H1.ᦪqᔠ⚪p2.Ó,ã⚪Ḅᦪ.12ஹ18ூ᪆௃ÒᵨäḄåæçḄåḄÒu³ᑣ¥ᓽ.ூ௃HVam=2,an=3,

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13ýஹ[⚪(ᐳ7⚪ᑖ69ᑖ)18ஹᵱᨵ12᝕ᨵ21.ூ᪆௃3ᐶᵱᨵx᝕ᨵyᯠ᪷(ᵱḄᦪ-1)x21=᝕Ḅᦪ(᝕Ḅᦪ-l)xj=ᵱḄᦪᑡ()*+,-.ᓽ0.ூ௃ᐶᵱᨵx᝕ᨵyy-2(x-l)-l2⚪34\3,,ஹx=g(yT)x=12.4ீy=21:ᐶᵱᨵ12᝕ᨵ21.ூ;<௃>⚪?⌕ὃBCDᐗFG)*ḄHᵨ.⚪ḄᐵKLMN⚪OᔜQRSTḄᐵUVW(XRᐵUᑡ()*.19ஹ(1)Y.᪆[(2)DE=@.ூ᪆௃(1)᪷\]^H_X\`]a_bᓽ0ᑨd[(2)ᑭᵨ_b`]aḄឋgᓽ0.hi⚪.ூ௃(1)'JDELAB,.ZAED=ZC=90°.VNA=NA,.IAAED^AACB.(2)ᙠRSA5COVAC=8,BC=6,.AB=+S1=1.TOEᚖvwᑖAB,.AE=EB=2.••4ms"R.DEAE.DE515•/\AED0°/XACB,--=------=—,DE=—9BCAC684ூ௃>⚪ὃBC_b`]aḄᑨd~ឋgஹdᳮஹḄᚖvwᑖḄឋgX.⚪ḄᐵKLNW_b`]a.hi⚪Oὃὃ⚪.3320ஹ(1)OE=-[(2)▢ᑖḄ☢F22ூ᪆௃

14(1)ᵫ⚪3M0EA5CḄO⌕-OEḄᓽ⌕-5cḄ᪷ᱯ]Ḅ`]ᦪᓽ0-4;(2)ᵫ⚪3MCOE+¡¢⌕-Ḅ▢ᑖ☢£ᓄᡧa¦0cḄ☢ᑭᵨᡧa☢§¨-.ᓽ0.ூ©.௃.(1)TABL஺஺Ḅv«:.ZACB=90°,'OE±AC,.OEQ//UBC,¬,•,;஺LABO;LA5CḄOVZD=60°,:.N8=60஺¬[45=6,BC=AB-cos60°=3,13.0E=-BC=—22ফ®¯0C,'ZD=60°,DZAOC=120°,'OF±AC,:.AE=CE,A/?=CF:.ZAOF=ZCOF=6Q°,.•.AOFX°`]a.AF=AO=CO,VᙠRtXCOE±RtXAFEOAF=COAE=CE'.,.COEgAFE,,▢ᑖḄ☢=ᡧaFOCḄ☢60^-x3233ᡧaFOC=-----------=-

153▢ᑖḄ☢:³.2ூ;<௃>⚪?⌕ὃBᙊḄឋgஹᐰX`]aḄᑨd±ឋgஹOḄM¶·ᡧa☢Ḅ¸¹º»ᔠ.3321ஹ(1)y=—-x2+3x(2)½PO+PCḄ¾ᨬÀ;PḄᙶ᪗(2,-)(3)ÃᙠᐹÅY.᪆.42ூ.᪆௃(1)ᵫᩩÇ0-4ÈᱥḄ⚔;ᙶ᪗·A;ᙶ᪗ᑭᵨËdUᦪÌ0-4Èᱥ.᪆¨[(2)D±PÍᔠÀᨵᨬ¾-(;DḄᙶ᪗ᓽ0[(3)ÃᙠᑖÎ᪷জAC^]ঝAC°\ÐÑÒᑖÎ-.ᓽ0.ூ©.௃(1)ᙠÓaOABCOOA=4,OC=3,AA(4,0),C(0,3),•.•ÈᱥÔÕOஹA\;Ö⚔;ᙠBC°×DÈᱥ⚔;ᙶ᪗(2,3),D0Èᱥ.᪆¨y=a(x-2¦+3,3ÙA;ᙶ᪗Úᐭ040=a(4-2¦+3,.4a=—-433•••Èᱥ.᪆¨y=--(x-2y+3,ᓽy=-ÜX2+3X(2),;PᙠÈᱥ^ÝÞ×.PA=PO,.*.PO+PC=PA+PC.D½;P±;DÍᔠÀPA+PC=AC½;P±;DÍᔠÀPA+POACD½;P±;DÍᔠÀPO+PCḄ¾ᨬvACḄ.᪆¨y=kx+b,,3\4k+b=Q,k=—,᪷⚪34,஺.4ß4b=3,b=3....vACḄ.᪆¨y=-0+3,433½x=2Ày=—x+3=F,42

163.•.½PO+PCḄ¾ᨬÀ;PḄᙶ᪗(2,-)2(3)Ãᙠ.জAC^]½à°aAQCPw,à°a;QÈᱥḄ⚔;ᓽQ(2,3),ᑣP(2,0)ঝAC°½à°aAQPCw,à°a;Cᔣãwä2Qᓫ4ᑮP,ᑣ;Aᔣãwä2Qᓫ4ᑮ;Q,ᑣQ;Ḅçᙶ᪗6,½x=6Àè=F3%+3=—9,éÀQ(6,-9),ᑣ;A(4,0)ᔣãwä2Qᓫᔣêwä49Qᓫ4ᑮ;Q,ᡠ¶;C(0,3)ᔣãwä2Qᓫᔣêwä9Qᓫ4ᑮ;P,ᑣP(2,-6)½à°aAPQCw,à°a;Aᔣìwä2Qᓫ4ᑮP,ᑣ;Cᔣìwä2Qᓫ4ᑮ;Q,ᑣQ;Ḅçᙶ3᪗-2,½x=-2Ày=--x+3=-9,éÀQ(-2,-9),ᑣ;C(0,3)ᔣìwä2Qᓫᔣêwä12Qᓫ44ᑮ;Q,ᡠ¶;A(4,0)ᔣìwä2Qᓫᔣêwä12Qᓫ4ᑮ;P,ᑣP(2,-12)»×ᡠíP(2,0),Q(2,3)ᡈP(2,-6),Q(6,-9)ᡈP(2,-12),Q(-2,-9).ூ;<௃DGᦪḄ»ᔠHᵨï·ÓaḄឋgஹËdUᦪÌஹw,à°aḄឋgஹ)*ðñ·ᑖòóôðñX.22ஹ-475-1.ூ.᪆௃ᐜ⌲⚗ᓄøᔠVùò⚗ᡈùòDG᪷¨ᓽ0.ூ©.௃.ú¨=-3^5~(^5-2)-12=-375-75+2-12=-475-1.ூ;<௃>⚪ὃBCûᦪḄüᔠý¹þÿ
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