2021-2022学年山东省济宁市嘉祥县九年级（上）第一次月考数学试卷（10月份）（附答案详解）

《2021-2022学年山东省济宁市嘉祥县九年级（上）第一次月考数学试卷（10月份）（附答案详解）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

2021-2022
ḕᗩἝἝ
ᨴὃᦪᔁ10ᨴ
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16vy—ax(x—12)=ax2—12ax=a(x—6)2—36a,
•
—36a=4,a=-f,ÙRÚÛᡠᙠḄᱥḄ⊤åeIy=~^x2+^Xi(2)Dæ☢çÛ⚔ᨬᜧèçI1mG#æ☢ᱥéḄáᙶ᪗I3,ᙠê=-2%2+3¤º#ëy=31224Q--x+-x=3,Xi=3,x=9,29-3=6(z)#&Ûᑁæ☢Ḅ~-I6z](3)ᵫ(1)Oì#ÙRÚÛᡠᙠḄᱥ᪆eIy=-i(x-6)2+4,••.ÙRÚÛᡠᙠḄᱥ⚔I(6,4),•.íîïÚÛðñḄèçI2m,.•.ÙTÚÛᡠᙠḄᱥ⚔I(6+12+2,4),ᓽ(20,4),ÙòÚÛᡠᙠḄᱥ⚔I(6+12X2+2X2,4),ᓽ(34,4),ÙóÚÛᡠᙠḄᱥ⚔I(6+12X3+2X3,4),ᓽ(48,4),••.ÙôÚÛᡠᙠḄᱥ⚔I(6+12X8+2X8,4),(118,4).
•
ÙôÚÛᡠᙠḄᱥḄ⊤åeIy=-hx-118)2+4.ூ᪆௃(1)᪷L⚪ÙRÚÛᡠᙠḄᱥÝÞ4(0,0),8(12,0),ßᨬàáᙶ᪗I4,yÙRÚÛᡠᙠḄᱥ᪆eIy=ax(x-12),ᓽ-36a=4,OÙRÚÛᡠᙠḄᱥḄ⊤åeIy=-^x2+|x(2)Dæ☢çÛ⚔ᨬᜧèçIImG#ëy=3R"2+ö=3,/=3,x=9,÷gOì2Ûᑁæ☢Ḅ~-I6z](3)ᵫÙRÚÛᡠᙠḄᱥ⚔I(6,4),᪷LíîïÚÛðñḄèçI2m,ìÙTÚÛᡠᙠḄᱥ⚔I(6+12+2,4),ÙòÚÛᡠᙠḄᱥ⚔I(6+12x2+2X2,4),ÙóÚÛᡠᙠḄᱥ⚔I(6+12X3+2X3,4)……ÙôÚÛᡠᙠḄᱥ⚔I(118,4),ᦑÙôÚÛ

17ᡠᙠḄᱥḄ⊤åeIy=-J(x-118)2+4.h⚪ὃjTUᦪḄlᵨ#⚪Ḅᐵopùú⚪#ûübtᦪ®¯ᦪ᪆eḄ8®.22.ூ&ᫀ௃(1)yᱥḄ᪆eIý="2+þ+mÿ4(4,0),8(0,—4),C(2,0)ᑖᐭ=52+"+(16a—4b+c=0c=-4,ஹ4Q+2b+c=0b=:,lc=-4᝞জBᐵᱥḄB',B'C,ᱥP,APBCᕜᨬ,19••,y=2X+%-4
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ᱥ$%&=-1,


B(0,-4),


᜛(-2,-4),+%B'C᪆-$y=kx+b,.᜛(2,—4),C(2,0)ᐭ/(-2k+b=-4+h=0'Z=1,b=-2,••y=x-2,

180X=—1/y=—3
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Pᙶ᪗(1,3)(3)᝞ঝ4MME_Lx/ᚖ6$E,ME74BF,+%BA᪆-$y=8&+p,.9(4,0),8(0,-4)ᐭ/—4n+p=0P=-4n=—1/%84᪆-$y=-x—4,+M:ᙶ᪗$?n,:.m-4),(-4$4,


M(-2,-4),
•.SᐵmḄ?ᦪᐵA-S=-m2-4m,S<ᨬᜧ>$4,MḄᙶ᪗(-2,-4).ூ᪆௃(1)᪷E4ஹBஹCGḄᙶ᪗/ᵨIJAᦪKLMN?ᦪᐵA-;(2)L8ᐵᱥḄ᜛Ḅᙶ᪗/ᵨIJAᦪKL%B'C᪆-/PQLPᙶ

19᪗R(3)4MMEJLx/ᚖ6$E,ME72Bᵨᵨᒘ⊡K⊤VWAMBḄ☢Y/L%BA᪆-/+M:ᙶ᪗$m,+m-4),(-4^MḄᙶ᪗.⚪ὃbcᵨIJAᦪKLMN?ᦪḄ᪆-ஹMN?ᦪdeḄᙶ᪗ᱯgஹMN?ᦪḄឋ]ஹMN?ᦪḄᨬ>ஹᨬhij⚪/klm8nopḄqᔠsᵨ/ᵨᒘ⊡K⊤VaAMBḄ☢Yt⚪ᐵu.