山东省烟台市龙口市2022-2023学年数学九年级上册期末综合测试模拟试题含解析

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2022-2023
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21ூ௃d⚪ὃḄyzRQSḄᑨJឋ,ஹHIJᳮx*ᐰlRQSḄᑨJឋ,!ßàá~âãᙠd⚪cḄ|ᵨ!ÐÊÑeA9AB?+=55/2"äd⚪Ḅᐵ$.315925ஹ(1)/n>-l(2)y=-x+3,J=-X2+2X+3(3)D(—,e),DF=—244ூᑖ᪆௃(1)ᑭᵨᑨN)"ᓽ8B(2)ªAḄᙶ᪗ᐭ±ᱥUæ-᮱+2*+111ᓽ8'9"᪆)!ᵫ±ᱥUḄ"᪆)'9B(3,0),¢PUBCḄ"᪆)æAx+èªB(3,0),C(0,3)ᐭy=Ax+6cᓽ8'9PUBCḄ"᪆)B(3)ᵫDᙠ±ᱥU£!¢ᙶ᪗(x,-A^+ZX+B),FᙠPUAB£!ᙶ᪗(x,-x+3),Aᑮ30DF=-X2+2X+3-(-X+3)=-X2+3X=-(x--)2+—ᑭᵨ⚔)"᪆)Ḅឋ,"ᓽ8.24ூ."௃(1)p±ᱥUxYᨵë[q!A>0,ᓽ4+4ì>0,A/n>-l(2)I•AGL0)ᙠ±ᱥUæ•x2+2x+m£,/.-l-2+/n=0,A/n=3,••±ᱥU"᪆))=/+2°+3,ÕC(0,3),px=0q!-/+2°+3=0,"Ax=Lᡈx=3,B(3,0),¢PUBCḄ"᪆)ï+èªB(3,0),C(0,3)ᐭï᝖c!A
3Z+b=0'b=3'k=9i"A!c!b=3PUABḄ"᪆)y=-x+3;(3)Dᙠ±ᱥU£!¢ᙶ᪗(x,-i+2°+3),FᙠPUAB£!ᙶ᪗(x,5+3),39:.DF=-X2+2X+3-(-X+3)=-X2+3X=-(^--)2+-»39315...pò=q!DFᨬᜧ!!qDḄᙶ᪗(,).2424ூ௃⚪ὃjᑭᵨᑨN)u&±ᱥUᙶ᪗YḄ[ᦪ'ó&ᦪḄÈtõ!ᑭᵨJᦪ'ᦪ"᪆)!ᑭᵨ⚔)"᪆)Ḅឋ,'9UḄᨬt.

2226ஹ(1)y=-x2+2x+3(2)1(3)NḄᙶ᪗>(D2EFG).22ூᑖ᪆௃(DᵫCḄᙶ᪗LMc,NᵫOPQ>x=LLMb,ᓽR-MSTU(2)ᐜLMA,Eᙶ᪗WXLMYYy=-x2+2x+3ᵫপrkᱥ<Ḅ,᪆a>y=-x2+2x+3,oy=0,ᑣ-X2+2X+3=0,Ax=-lᡈx=3,AA(-1,0),tx=lu,y=-l+2+3=4,E(1,4),JYy=2x+2,AH(0,2),ACH=3-2=1,

23ASAACE=CH«|XE-XA|=xlx2=lU(3)᝞]2,F¡FP_LDEP,¶ljFP=LF¡FQLONQ,TGFᑖNOGE,/.FQ=FP=1,ᙠR3FQOc!OF=V^,᪷4HIJᳮA!OQ=JoÌ2_b02=],AOQ=FQ,:.ZFOQ=45°,:.ZBON=90o-45o=45°,Q¡QM_LOBM,OM=QM**•ONḄ"᪆)y=xজNᙠ±ᱥUy=-x?+2x+3ঝ£!y=xὶøজ¶£=-f+2x+3y1+713x=2"A
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