2022-2023学年云南省弥勒市九年级数学第一学期期末达标测试试题含解析

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2022-2023
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1620ஹ(1)17(2)᝞ᡠs-᪆(3)2.8(4)জঝ.ூᑖ᪆௃(1)ᵫ¡¢£ᢣᦪ3ᑖI69.5¥¦(¨69.5)Ḅ¡ᨵ17vᓽ;3tAª(2)᪷«Qᙠ¬GhḄ¦QḄ¢£ᢣᦪ3ᑖI69.5,t®ᓽ;(3)᪷«40v¡Ḅ¯ᙳᑁ²³´z¡¢£ᢣᦪ3ᑖµ¶·mᓽ;3tAª(4)᪷«40v¡Ḅ¯ᙳᑁ²³´z¡¢£ᢣᦪ3ᑖµ¶·mᓽ;ᑨ¹জঝḄᔠᳮឋ.ூC-௃-Y(1)•••¡¢£ᢣᦪ3ᑖI69.5¥¦(¨69.5)Ḅ¡ᨵ17v•••¡¢£ᢣᦪ3ᑖ᣸¾¿40Ḅ¡QQḄ¡¢£ᢣᦪ3ᑖ᣸¾ÀÁ17,ᦑ`ᫀI17(2)᝞ᡠsY100Â01234567891011(3)ᵫ40v¡Ḅ¯ᙳᑁ²³´z¡¢£ᢣᦪ3ᑖµ¶·m;Pᙠ¡¢£ᢣᦪ3ᑖQÃḄ¡Q,¯ᙳᑁ²³´zḄᨬ(zÅI2.8ÆÇᐗᦑ`ᫀI2.8(4)ᵫ40v¡Ḅ¯ᙳᑁ²³´z¡¢£ᢣᦪ3ᑖµ¶·m;PজÈ{AஹBᡠx⊤Ḅ¡QḄ¡¢£ᢣᦪ3ᑖÉᨵ}ÊËQÌt“ÎÏÐT¢£Ñ¡”ḄᡊᶍÕÖ×ØÌáÙᔠ¢£ÚÛᔠᳮঝÈ{B,Cᡠx⊤Ḅ¡QḄ¯ᙳᑁ²³´zÉᨵ}ÊËQÌt“Üᐰ☢Ðᡂ(ßàá”Ḅâᧅä᪗×ØÌïᙳᑁ²³´zᔠᳮᦑ`ᫀIজঝ.ூb௃c⚪ὃde⚣ᦪᑖçèஹ·mஹ᪵cêm´ëஹìíᦪᨵᦔᦪïPðñ⚣ᦪᑖçè·m-⚪Ḅᐵ.21ஹ(1)BE=DG.(2)—6ூᑖ᪆௃(1)ᑭᵨOPᩩ3tABEôADG(SA5),?@;3tAB

17(2)JtAC,rBDM,JtCG,CG=AG,tḼAACG2:V;.U/GAB=15°,/EAB=105஺ᨬ}ᑭᵨYQB#ᓽ.ூ"#௃#$(1)BE=DG.ᳮᵫ᝞$ᵫ⚪7AB=A£>=2,NGA£)==a."EuAG,:.AABE%ADG(SAS)..BE=DG.(2)᝞nJtAC,r30,JtCG.••:;ABC஺8S;•ACBO1ᚖwxᑖ.•.,&8ᙠyDGOGᚖwxᑖAC.:.CG=AG.ᵫ⚪7AD=C£>=2,.-.AC=272.8S;AEFGḄ:Y%272AC-AG..-..AC^AG^CG,ᓽAACG2:V;.NC4G=6()஺..*.Zl=ZC4G-Z2=60°-45°=15°.ZEAB=N1+ZGAE=15஺+90஺=105°.ᑣ&BḄIYiA%ᙊ=ABY%HI?ᙊ=%105஺ḄaḄY.

18ᵫ105x247ᓽ--------=—18067%ᡠi&8ḄIY?.ூ&'௃(⚪a⍝ᑭᵨ¥¦Ḅឋ.ᩭB#Ḅ⚪§ὃ+ᑮḄ©&ᨵᐰ2V;Ḅᑨjឋ.2:V;Ḅᑨ¥¦Ḅឋ.ijBYḄQ.®ᔠឋ°±.422ஹ(l)y=—j=lx+l(1):;M80CḄ☢³2.xூᑖ᪆௃(D᪷6⚪7iB&BḄᙶ᪗¶[iB·¸¹ºᦪḄ#᪆QZ[B&AḄᙶ᪗¶[iBadºᦪḄ#᪆Qz(1)᪷6(1)<Ḅºᦪ#᪆QiB&C,¶[iB:;MBOCx¼:;᪷6☢³QᓽB.ூ"#௃#$(1).••&8Ḅᙶ᪗%(-1,-1),•.•·¸¹ºᦪy=((AW0)Ḅn½¾&8,XᑣT=4,&=2,-24,.·¸¹ºᦪḄ#᪆Q%,=a,x••&AḄÀᙶ᪗2,2=—,x=LxÁ&AḄᙶ᪗%(1,2),:•adºᦪy=mx+n(ÃWO)Ḅn½&A(1,2)ஹ&B(-L-1),/%+஻=4[m=2•ீcc#VC,-2m+஻=—2[n=2ᓽadºᦪḄ#᪆Q%y=lx+l(1)•=5+1yÈr&GÁ&CḄᙶ᪗%(0,1),••&3(-1,-1),&M(-1,0),:.OC=MB=1,•••BMJLxÈ,.MB//OC,:;MB஺஺x¼:;•:;M30CḄ☢³$OM-OC=2.

19ூb௃c⚪ὃdõö
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ᦪḄø⚪-`c⚪Ḅᐵù⚪qtᡠ<⚪◤⌕Ḅᩩᑭᵨ
ᦪḄឋgõö
ᦪḄឋg-`.95PMll23ஹ(1)—?ᳮMQḄ
()PMḄᓽᫀ.ூCD௃(1)FGGEᔠH
BG=BE,᝞Jᡠ4:•••MNOABCDPO
AB=4,BC=3,BD=5,VCE±BD,.-BCCD=-BDCE,22ACE=—,5ᙠABEC;
ᵫ=>?ᳮQZY)=|,9:*BP=—,10FGDᔠH
᝞Jᡠ4Q

20ABCDR"0"O,BP=DP=CP,BP=-,2ᔠ,—

21.'.BEF^AFEG,:.EF2=BEEG,99.-=-EG,255:.EG=~,5BG=EG+BE=2,BP=1,/ஹPMXY
Z[3-----%ÉBPpuP'஺80,JtPG,PM,PPrGH&O,᝞nᡠG:BP=5x=PG=P'G=PM,ᑣPO=PO=3x,GO=4x,:.gp'QPG=gGOPP',24.P'Q^—x,.MQ=GQ=y]p'G2-P'Q2314AMG——x,5APM=PG-MG=,5PM\\11:.-----=*x:5cx=—BP525ூ&'௃(⚪ὃ+,ÊᙊË⚪;Ḅឋ.☢³RḄÌᵨVºᦪ1ÍV;ḄᑨÎឋ.2©&ÏᙊÎ;Ḅ®ᔠ⚪ÐÑ<2Òᑭᵨᦪ;ÓᔠÔÕÎÖ×ḄØẠ#Ú(⚪Ḅᐵ4.

22724ஹ(1)y=-x2+-x+2t(2)Ft=2H
MNḄᨬᜧ4.ூᑖ᪆௃(1)✌ᐜYk1ᦪGᙶ᪗noᙶ᪗
()pᐭrk1ᦪD᪆sb,cḄᓽ;(2)᪷&wᚖRxnḄRzx=t,M,NḄᙶ᪗
()᪷&ᙶ᪗ឋ|ᓽ.ூCD௃DQ(1)(1)•.•Yk1ᦪy=-+2ᑖoynஹxnAஹB
x=0H
y=2,y=0H
x=4,AA(0,2),B(4,0),x=0,y=2pᐭpᐭy=-x2+bx+cc=2x=4,y=0pᐭpᐭy=-x2+bx+c,,7-.b=,c=2,227cy=~xH—x+22(2)),,wᚖRxnḄRzx=t,ᙠY▲oRzABM,i7ᵫ⚪᧕A/(t,——1+2),N(t,-t'+—f+2)227i)ijAW=-t2+T+2-(——t+2)=-t2+4r22Ff=-2=2H
MNᨵᨬᜧQ4-'=42a4aூ௃ᙠD⚪H⌕ᮣᵨrk1ᦪḄJឋ|rk1ᦪḄD᪆s,ᑭᵨᦪOᔠD⚪⚪Ḅᐵ¡.1«=1(ᔣ\■(ᔣஹ((1)¢ᙠ,b=32\2'12JA2)(-1.5,-0.5)(3)^(7346+7170)*¬,
(®¯0),°AwAPJLxnூᑖ᪆௃(1)ᵫAᙠ¨©zª
"Ḅ
()¨©zḄD᪆s.

23´
BQl.yn஺
RzBQRzAP®oM.᪷&-^MMB~^MOP~^AQOH-SPOop“0=3Dµ¶ᓽAḄ
)5Ḅᙶ᪗
·Aஹ3Ḅᙶ᪗pᐭ¸ᱥzḄD᪆sᓽᑮº(1)¸ᱥz»nx=—1.5,*´(—L5,y),ᑣDO?i.PR2.ᯠ¾ᑖ0¿ÀÁºᓽ0B(3)*M(x,y).ᵫM0=MA=M5,MḄᙶ᪗.wBᐵynḄ»STÃMoynQ.ÄH!8QMḄᕜÆᨬÇ.ᵨḄÈÉZsÊËᓽ.ூCD௃পᵫA(l,4)ÍQA=xy=lX4=4,,4••V--.X*m,Yj(777<0+.°4wAPLxnP,În0,Rz5஺Rz4´®oM,ᑣS-op=S.oe=L=-----2mm:2(—39m᦮ᳮQ2᪷+3×2=0,DQÐ=172=-2.Vm<0,ᦑ8(-2,-2+.·AஹBAy=ax14-bx—2=4஺—2b4=a+b

24a=1DQ1,c
0=3y=f+3x..•¸ᱥzy=Y+3xḄ»nx=-1.5.oi9*p(—1.5,y),ÔUPO2=1+y2,OB*,PB2=-+(y+2)-.•••×P05ØῪ0"O
rᑖ0¿ÀÁºQজ2஺2=஺82,ᓽÜ+Q/=8,DQy=±Þ
42ß),à—1.5,ß)ঝPB?=OB'ᓽ:+(y+2á=8,DQy=-2+ὡ,1Q7ঞPB?=Op2,ᓽ—+(y+2)-=Y+/
DQy=-0,544:.[(—1.5,-0.5)

25(3)ÛM(x,y).VA(l,4),0(0,0),.MO2=x2+y2,MA1=(X-1)2+(J-4)2,MB2=(x+2)2+(y+2)2.,;MO=MA=MB,.-x2+y2=(x-l)2+(y-4)2x2+y2=(x+2)2+(y+2)211x=----2#$-,u8ᐵyÈḄÜ&ᡠᙶ᪗%$[1,-1æ.Jt5'ryÈQ.ḄᕜYᨬÞ.ூ&'௃(⚪cdºᦪ®ᔠ⚪.ὃ+,ᵨßWᦪRBcdºᦪḄ#᪆QஹcdºᦪḄឋ.ஹÈÜ-ᨬÉË⚪2.à[1æËḄᐵ4ᒘ⊡Rzà[1æËḄᐵ4ᑖãäåzà[3æËḄᐵ4BMḄᙶ᪗.

2626ஹ(1)ji=x-3%=-(2)x<-1ᡈ0VxV4(3)´Ḅᙶ᪗(5,é)ᡈ(1,4)ᡈ(2,2)ூᑖ᪆௃(D·8ᙶ᪗pᐭêëì1ᦪD᪆sᵨḄ
·ACm,1)pᐭḄêëì1ᦪḄD᪆sm,ᯠ¾ᑭᵨí?îᦪ9ᓽYk1ᦪḄD᪆s(2)RTᵫAஹ5Ḅᙶ᪗᪷&Jᫀ4(3)*´Ḅᙶ᪗஺஻,Y)(Ãு0),ᑣC(m,in-3),ᵫAPOCḄ☢83,ᑮ×POCḄ☢8m14=-mx|Y—(m-3)|=3,ÃḄ
ᓽPḄᙶ᪗.2mkூCD௃DQ(1)5(-1,-4)pᐭ%=rQ*2=4x4•êëì1ᦪḄD᪆s%=Y
x4A(m,1)pᐭò1=—,D¬=4,m.A(4,1)4k+b—1A(4,1)ஹ8(-1,-4)pᐭYk1ᦪyi=Aix+6
Y“-k+h--4xDki=l,b=-3Yk1ᦪḄD᪆sji=x-3(2)ᵫJÍQxV-1ᡈ0VxV4H
kxx+b--<0X

,4(3)᝞JQ*´Ḅᙶ᪗(ôY)(m>0),ᑣC(᝞m-3)m4APC=\YY(õY3)|,஺ᑮRzPCḄÈɬm14:APOCḄ☢8==—mx|---(m-3)|=3,2mDQö=5ᡈ-2ᡈ1ᡈ2,÷,¬>0
ø=5ᡈ1ᡈ2,
´Ḅᙶ᪗ù()ᡈ(1,4)ᡈ(2,2).

27ூ&'௃(⚪ὃ+,adºᦪη¸¹ºᦪḄr&ßWᦪRBadºᦪη¸¹ºᦪḄ#᪆QV;☢³gæ/0ßWᦪR#⚪Ḅᐵ4.