2021-2022学年河北省邯郸市魏县八年级下学期期末考试数学试题

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2021-2022ᦟᦪᔁ'⌱⚪⚪Ḅ⌱⚗ᨵ⚗Ḅ⚪3ᑖᐳ36ᑖ1.᪷ᨵᑣxḄ!#)A.x>1B.x<1C.x>1D.xwl2.$ᦪ&6ஹ4ஹ஺ஹ3ஹ2Ḅ)ᙳᦪ5,ᑣ஺Ḅ!+$)A.10B.5C.8D.123.᝞-ᙠ)/01ABCDNB=70°,ᑣND=$)A.35°D.130°4.2ᦪy=2x+4Ḅ-34y567Ḅᙶ᪗$)A.(2,0)B.(-2,0)C.(0,-4)D.(0,4)5.ᵨ;<=>ᐗ<@Y-6x-10=0ABᑡD1Ḅ+)A.(X+3)2=1B.(x-3)2=1C.(X—3>=19D.(x+3)2=196.BᑡEFḄ$A.V2XV3=V6B.V2+V3=V5C.5/8=4V2D.V4—V2=V2

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2QRᐗ20303550100NVᦪW3751510ᑣᙠHIJKLMNᣎPQRḄSᦪTUᦪA.30,35B.50,35C.50,50D.15,5012.᝞-XYZ[AB=12ᔖ]J7P^2ᔖ]/`Ḅabc7Adᔣ7BfJJ7Q^4ᔖ]/`Ḅabc7Bdᔣ7AfJ.h7MAdᑮjᔜlḄm7nopfJ.qh7rsḄtu+sᔖ]J7PḄfJAs+t`ᑣB-vw᧜s4trsḄ2ᦪᐵzḄ$Y'{|⚪⚪3ᑖᐳ12ᑖ13.EF}J$-6Y஺=__•14.Ḅ᦮ᦪ+ᦪᑏ$៉Ḅᦪ:15.XY2ᦪBᑡhᩩ}জx>0AyxḄᜧᜧঝḄ-7$1,-2YᑏᔠᩩḄ2ᦪḄ⊤j}16.᝞-¡AB☠ᙠᜋ¡Ḅ¤¥Aᑮᜋ᪷஺Ḅtu+2]¡Ḅ⚔¥Bᑮᙢ☢Ḅtu+7].©ª¡Ḅ¤¥Aᔣ᜜¬Jᑮ¡Ḅ¤¥©ᑮᜋ᪷0Ḅtu®¯3]MA¡Ḅ⚔¥BB°±²,´µ88'Ḅ!}জ®¯1]ঝᜧ¯1]:ঞ¯1].ᐸ¸¹Ḅº».

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,Hh2ᦪḄ-4x5ᑖÀ6¯7ÁB.y,=2x+d/i2=ax-31
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72021—2022@A@BCDAEEFὃHI@JᦪAHᔁMὃNᫀஹ⌱⚪AABDCABDCBCDஹ{|⚪13.614.3,4,5éᫀåë15.y=x-3éᫀåë16.ঞஹ>é⚪17.>U1ì=9-5=4......................................................4ᑖ2ì=2-2#+3+651=5-2+2=5..............................................8ᑖ18.>}1Uª7í-2,-5îᐭ.“=2ð+/,ò-5=2x-2+b,>ò=7.ª7P-2,-5îᐭÉ="-3,ò-5=ax-2-3,>ò஺=1.••Hh2ᦪḄ>᪆ᑖÀ+É=2x-lTô=x-3.......................4ᑖ

8ফ•.•ᙠ_=2x-l`_=0,aD•ᙠ_=x-3`_=0,ax=3,••.8(3,0).=^^5x5=|x1x5=^............................................(7ᑖ)(3)ᵫgᦪ
hijkx<-2mn

9y.,CD//AF...01/CZF)/01....................................6ᑖ2UBC=2CD.................................................8ᑖÑ×}•:CFᑖZBCD.NDCF=-NBCD=45஺=ZDEC2:.CD=DEVBC=IDE:.BC=2CD...............................................10ᑖ20.>}150,5...............................................6ᑖ23———x350=252W....................................12ᑖ

10NU᪥350~@Jᵱ!ᨵ252&᪗.21.U(1)j=gx+I,`x=0,aᑮp=l`y=0,aᑮஹ=2,.•./(-2,0),8(0,1),ᙠRfA/40804=2,OB=\,᪷ᳮaU48=2+12=1ᡠu/8CQ☢5....................................................................................(6ᑖ)(2)஺JLx/CEB=NAFD=NAOB=9,•,u48஺஺:BC=AB=AD,ZDAB=ZABC=90°9
.ZDAF+Z.BAO=90°,ZABO+ZCBE=90°,/DAF+ZADF=90°,ZBAO+ZABO=90°9:.ZBAO=NADF=ZCBE,:.\BCE^\DAF^\ABO9:.BE=DF=OA=2,CE=AF=OB=\9.OE=OB+BE=2+"3,OF=OA+AF=2+1=3,AC(-1,3),£>(-3,2).......................................................................................(10ᑖ)

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᪆y=-x-i,>ò:b=\0,ᑮX=-1,ᓽAf(-l,0).(12ᑖ)

12