广西贵港市覃塘某中学2022-2023学年数学九上期末检测试题含解析

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2022-2023
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16-%=-1z2=3,...&AḄᙶ᪗x(-1,0),Vy=-X2+2X+3=-(X-1)2+4,•••}ᱥḄ⚔&DḄᙶ᪗x(1,4),ᑣ&CḄᙶ᪗x(0,-3),DCDḄ⊤xy^kx+b,k+b=4CஹDḄᙶ᪗ᐭ-c,[b=-3k=7-L°b=-3DCDḄ⊤xy=7x-3,3py=0x=—,3ᦑ&EḄᙶ᪗x(1,0)(3)জp&Pᙠx)᝞72,72•.,&BஹCḄᙶ᪗ᑖx3,0ஹ0,3,OB=OC=3,|NOCB=45°=NAPB,&BBH±AP&H,PH=BH=a,JPB=PA=0a,ᵫᳮ-AB2=AH2+BH2,/.16=a2+0a-a
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17ᔠ-PB2Ḅx16+80.ூ&1௃2⚪=ᦪᔠ⚪ὃ56ᦪ7&Ḅᙶ᪗ᱯ¡¢ᦪ£ᳮῪḄឋ&Ḅ*+ឋj¥a¦;<ᦪḄឋ=⚪Ḅᐵ?.24ஹ1y=_§x+§u-2,273;1,0332N&Ḅᙶ᪗x0,26-30,273+3;3E-1,-©ªஹF0,ªᡈE-1,-!ª,F-4,ª3333ூᑖ᪆௃1ᵫ}ᱥḄ“¬D”j⍝ᦪ᪆Ḅaᓽu2AADJLy)&D,ᑣjAN=AC,ᔠA&ᙶ᪗ᑣGH0NḄ°GHN&Ḅᙶ᪗u3ᑖ±²pACx!n³ḄpACx!n³Ḅ*GH´µᩩlḄEஹFᙶ᪗ᓽூ௃1•:y="#x?"$x+26a=",ᑣ}ᱥḄ“¬D”Ḅ᪆xy=-⌮x+·u33333L¸,⌳°.ὡ.,x=-2[x=l33ὶ½¾᪆G¿&À-y26ᡈ1y02Á2ÁAA(-2,25B(1,0)(2)᝞71,AADJLy)&D,ᙠy=-2/J?x+2jiEÃy=0G-x=-3ᡈx=l,AC-3,0,ÄA-2,24,AC=V-2+32+2V32=V13ᵫÅᢚḄឋjAN=AC=>/13,VAAMNxÇ}ᱥḄ“¬”,...Nᙠy)ÄAD=2,ᙠR3ANDEᵫᳮ-DN=VAN2-AD2=713^4=3

18VOD=2V3:.ON=2G-3ᡈON=25/3+3.r.N&Ḅᙶ᪗x0,26-30,20+3;(3)জpACx!n³Ḅ᝞72,F*+)ḄᚖFH,AAKx)&K,ᑣᨵAC஻EFÄAC=EF,:.ZACK=ZEFH,ᙠÉACKAEFHENACK=NEFH/5•••}ᱥḄ*+)xx=-l,:.F&ḄÊᙶ᪗x0ᡈ-2,•.•&FᙠDAB...pF&ḄÊᙶ᪗x0ᑣF(0,2Ë)Í&EᙠDABO3Eᑮy)ḄUÎxEH-OF=ᓽEḄÏᙶ᪗x-8,333pF&ḄÊᙶ᪗x-2ᑣFÐAÑᔠ.ᔠ⚪tÒÓ;ঝpACx!n³Ḅ*

19VC(-3,0),ÄA(-2,26)ÕACḄE&ᙶ᪗x(-2.5,6),E(-1,t),F(x,y),Jx-l=2x(-2.5),y+t=2Z•'•x=-4,y=26-t,2Á-t=-±^x(-4)+×i,-t=-⌳333AE(-1,-),F(-4,12^).33jØᙠ´µᩩlḄ&F,ÍE(-1,-Ù)ஹ(0,2Ë)ᡈE(-1,-Ù)F(-4,ᕦ5)3333ூ&1௃2⚪=*ᦪḄᔠj¥ὃ5a¦;<ᦪÛÜ7ÝÞߣ=à2⚪Ḅᐵ?áâ)⚪1Q25ஹ1
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20AE!ᑖ/BAF,•••4AE="AEVOE=OA>:.4AE=/OEA,:./OEA=CAE,AOE//ADVAD±CD,AOE1CD,.••CD=ᙊ஺Ḅᑗ.(2)r=ᙊ஺ḄèLᙠRtACEOECO2=OE2+CE2ᓽ(2+r)2=d+42.-r=3.VOE//AD,AACEO^ACDA.COOECE,•AC-AD-CD424I?,-AD=g,ED=y-4+EDூ&1௃2⚪ὃ5ᙊfᐵa¦;<æᑭᵨᙊḄᑗᳮÝfgḄឋmnᑖ᪆=⚪Ḅᐵ?.326ஹìíᔣO*+)xDx=,⚔&,2ூ᪆௃ï⚪ᑖ᪆:ᐜñò£*ᦪḄómnòᡂ⚔&(᪷Jᦪ7ឋᑏHìíᔣ*+)⚔&ᙶ᪗.ï⚪᪆y=-2x2+6x+4,=-2|x2-3x+-1+4+-,I42’17-17H----——2x++-,22

21|,⚔:317./ᔣ1,234567X52T