2022届北京市级名校中考数学考前最后一卷含解析及点睛

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16ঝ᝞3ᡠBM_LAEM,AஹEஹFᐳ-(2)AE=60+2%BF=3ᢣ+3,ᑣBM=-BF=^+312223ᡠ4AஹEஹFᐳBᑮ6AEḄ89:;<ூ>௃@⚪ὃCD'EḄឋG!HEḄឋGIJᐳKLMND'EḄឋG!HEḄឋGO⍝ᑖQRSᐳT⚪UV⚪ḄᐵX.@⚪Y"Z[\.22ஹ(1)y=-x-2(2)C(-2,0),AAOB=6,,(3)-42.ூV᪆௃HI(1)ᐜ`8ᙶ᪗cᐭcᐭe=&fg"ᑮijklᦪV᪆noᑭᵨijklᦪV᪆nrsAᙶ᪗ᯠuxᑭᵨvswᦪxf&ylᦪV᪆n1(2)᪷{x|3Ḅᙶ᪗ᱯ~rsCᙶ᪗ᯠu᪷{E☢n!AOBḄ☢=SAAOC+SAB°C;(3)Clᦪᑮ-4Vx<0ᡈx>2&ylᦪᙠijklᦪ'.ூV௃mVB(2,-4)ᙠijklᦪy=—Ḅ3x.•.m=2x(-4)=-8,QijklᦪV᪆n:y=-xQ`A(-4,n)cᐭy=-----,X-4n=-8,Vn=2,ᑣAᙶ᪗:(-4,2).`A(-4,2),B(2,-4)ᑖcᐭ=1«+

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18VZODB=90°,:.ZB=900-ZDOB=90°-50°=40°;(2±²Vঝ¤¥OFQD,:.ZOFA=ZFOD,,••F:®ADḄ":.ZAOF=ZFOD,:.ZOFA=ZAOF,/.AF=OA,VOA=OF,/.AOF:Z¯E:.NFAO=60஺,³´JZDOB=60°,:.ZB=30°,•..ᙠRtAODB",OD=2,OB=4,.*.AB=AO+OB=2+4=6.ூ>௃@⚪ὃµᑗḄឋG¶ḄឋGZῪEḄឋG®¸ᙊºḄᐵwZ¯EḄᑨsឋG¼30஺Ḅ6EḄឋG.KLMNᑗḄឋGUV(1)ḄᐵX½¾AA஺¿:Z¯EUV(2)ḄᐵX.24ஹ(1)m=-6,DḄᙶ᪗:(-2,3)(2)tanZBAO=^(3)<-2ᡈ0

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