江苏省高邮市2022-2023学年数学九年级第一学期期末经典模拟试题含解析

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2022-2023
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19.,.ZA+ZB=90°,:.ZODA+ZCDB=90°,.ZODC=180°-(ZODA+ZCDB)=90°,ᓽCD_LOO,஺஺஺Ḅᑗ.(2)!"£>E.••,4E஺஺Ḅ)-ZADE=ZADO+ZODE=90°,Í_NODC=NCDE+NODE=90°,:.ZADO=ZCDE.,-NDCE=NDCA,:ACDEs4CAD,.CECD''~CD~~CAAE=2,•AC31Ì3c=x=C£>,ï!|AC=3x,CE=3x-2,ᓽð=x3x3ax=241.CE=3x-2=-4ூAB௃
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⚪Ḅᐵ.225ஹ(1)y=—j=x+l(2)÷AḄᙶ᪗9(3,0)ᡈ(-5,0).xூ᪆௃(1)øA(L2)Yᐭùú~Õ)y=x+b,ᑖû1aᓃbḄV(2)ᐜ᪷Q)᪆aᑮ80=C0=l,X᪷QA8CPḄ☢þ'o2,ᓽ1aᑮPḄᙶ᪗.

20ூO௃P(D¨A(1,2)©ᐭgy=£./4=2,XgḄ᪆}:7=2X¨A(1,2)©ᐭgy=x+b,./6=1,.•.gḄ᪆}:y=x+l;(2)PḄᙶ᪗:(x,0),ᙠy=x+lK¬y=0,ᑣx=T¬x=0,®|y=L.B(-1,0),C(0,1),ᓽBO=1=CO,•••5CPḄ☢¯A°2,8Pxe0=2,ᓽ4-(-1)|xl=2,22/x=3ᡈ-5,Ḅᙶ᪗:(3,0)ᡈ(-5,0).ூ௃T⚪⌕ὃ±rstᦪq@ᦪuv⚪⚪Z²Prstᦪq@ᦪuḄᙶ᪗GZ³´F1ᦪ᪆}.26ஹ(1)x=2+y/2;(2)x=3ᡈx=l.ூᑖ᪆௃(1)ᑭᵨ·<{|./m(2)ᑭᵨ¸}ᑖ{|./.ூO௃(1)Vx2-4x=-2,Ax2-4x+4=-2+4,ᓽ(x-2)2=2,/x-2=±y/2)ᑣX=2¹ºm(2)T(x-3)2-2(x-3)=0,:.(x-3)(x-1)=0,®Jx-3=0ᡈx-1=0,

21ax=3ᡈx=l.ூAB௃
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