10已知直线l:
y=x+4,l:
y=kx+4,若l和l与x轴围成的三角形面积为16，则k的值为1212
11已知一次函数y=-2x+3，则此直线关于x轴对称的直线解析式为，关于y轴对称的直线解析式为
二选择
1已知一次函数y=2x-1和y=-3x+m的图像交于第三象限的一个点，则m的取值范围是（）
1331Am<-Bm-2442
2一次函数的图像经过点A（-2，-1），且与直线y=2x-3平行，则此函数的解析式为（）Ay=x+1By=2x+3Cy=2x-1Dy=-2x-5
3一条直线经过点（0，4），与x轴交于点B，且S=8，则直线AB的解析式为（）?
AOB
Ay=x+4By=-x+4Cy=2x+4Dy=x+4或y=-x+44某兴趣小组做试验，将一个装满水的啤酒瓶倒置（如图），并设法使瓶里的水从瓶中匀速流出，那么该倒置啤酒瓶内水面高度h随水流出的时间变化的图像是（）
ABCD
cultureandentertainmentvenues,fitnesscenters,hasagoodecologicalenvironment,jobsecuritymeasures）,theserequirementsareverystraightforward,specificstandards,alsohasacleardirection,moreeasilybyasuperiorexamination.Povertyassessmentistolookatthepercapitanetincomeofthepoorendof2015standardsis......Yuan,higherstandardsispoverty.SuperioracceptancetoentrustathirdpartyinstitutionfromHouseImplementation.Afteracceptance,alsothroughspotchecks,visits,telephonesurveyslookingactivities.Thismeansthatourachievementshavebeenrecognizedbythepoorforpovertyalleviationthroughacceptance,whichweputforwardhigherrequirementsforpovertyeradication.Therefore,theCountyOfficeforpovertyalleviationtoevaluationeffortsinthisregard.Toimplementthegridmanagementmodel,integratingpovertyalleviationintogridmanagement,and"makeaheart"activitycombinedpackageofleadingcadresimplementmonitoringsystemsforpovertyalleviation,eachpoorhouseholdsidentifiedapackagecost.Inthisregard,youcandesignaform,indicatingthepoorbasiccauses,currentincome,poverty,supportmeasures,implementationofsupportmeasures,throughhelping'income,annualrevenue.Fromnowon,protectionofficersworkinghouseholds,household-by-place.Whentheexamination,whichthepoordon'thavetimetogetoutofpoverty,andholdingpeopleaccountable.Third,onenvironmentalprotectioninconstructionofecologicalcivilizationisthefocusononeofthesixbattlethisyear.XianWeiproposedtobuild"greenmountainsandbeautiful,happyandharmonious"new......Target,whichisthebasisofenvironmentalprotection.Dowellenvironmentalprotectionwork,wekeepthesideofthemountains,nortothemassestocreateasuitableforresidentialandbusinesssuitableforswimmingandraisinglivingandworkingenvironment.Lastyear,wegotgoodgradestheenvironmentalwork,atmosphericindexranked4thinthecitytoobtaineco-compensationaccordingtoprojectneeds,inaccordancewiththe"channel,usethesame,anduse"principle,theimplementationofprojectplanning,fundingandmanpowerarrangements,avoidingduplicationofinputsandwasteofresources,effectiveintegrationofpovertyrelieffunds...Heretoremindeveryonethatbundleintegration-relatedfunds,aimstoconcentratefinancialresourcesforbigundertakings.Authoritiesdonotthinkthathaslessautonomy,pursuingthederegulationofwork.Thisyearontheamountoffundsonfightingforthedepartmentsconcernedtoincreaseoverthepreviousyear...and...respectively.Inthisregard,thefinancialDepartmenttodispatchinatimelymanner,analysesrelevantdepartmentsstrivefor.（E）toimplementthepovertyassessmentresponsibilities.Ofvillage-levelevaluationisveryclear,thatis,"five-ten"（"five-way"path,power,throughwater,throughradio,television,information;"Ten"thehanlaobaoshoufields,richprojects,Officekitchen,healthservices,sanitationsystem,pre-schooleducation,
三解下列各题
3如图，一次函数y=ax+b与正比例函数y=kx的图像交于第三象限内一点A，与y轴交于点B（0，-4），且AO=AB，?
AOB的面积为6，求两函数解析
式
14已知一次函数的图像过点A（2，-1）和点B，其中B是直线y=-x+3与y2
轴的交点，求次一次函数的解析式
5直线y=kx+b与坐标轴围成的三角形面积为4，直线向下平移3个单位过（0，-1），求原直线解析式
6已知一次函数y=kx+b中自变量x的取值范围是-2?
x?
6，相应的函数值取值范围是-11?
y?
9，求次函数解析式
7如图已知A（-3，2）、（3，1），在x轴y轴上分别找一点使它到A、B两点距离之和最短并画出图形
8.若一次函数y=kx+3的图像经过A点，该点到x轴的距离为2，到y轴的距离为1，试求出这个函数的解析式.
9.已知y与x+1成正比例，当x=5时，y=12，求y与x的函数关系式。
10.已知一次函数y=kx+b的图像过（1,2），（2,0）。
（1）求其解析式;
（2）自变量x的取值范围是,4?
x?
4时，求函数值y的取值范围.11.一次函数y=ax,b、y=bx,a的图像相交于一点（3，3），求函数y=（a+b）x+ab与x轴的交点坐标。
12.某车间有20名工人，每人每天加工甲种零件5件或乙种零件4个，在这20名工人中，派x人加工甲种零件，其余的加工乙种零件，已知加工一个甲种零件可获利润6元，加工一个乙种零件可获利润24元（
?
写出此车间每天所获利润y（元）与x（人）之间的函数表达式;
?
若要使车间每天获利润1260元，问要派多少人加工甲种零件,
113.直线y=x+2交x轴于点,，交y轴于点,，点,（x,y）是线段AB上一动点（与,，,2
不重合），?
PAO的面积为,，求,与x的函数关系式。
B组
13.一次函数y=kx+b的图象经过点A（1，3）和B（-1，-1），则此函数的解析式为_________（14（若解方程x+2=3x-2得x=2，则当x_________时直线y=x+•2•上的点在直线y=3x-2上相应点的上方（
15（已知一次函数y=-x+a与y=x+b的图象相交于点（m，8），则a+b=_________（
plac-by-supportmeasures,throughhelping'income,annualrevenue.Fromnowon,protectionofficersworkinghouseholds,householdregard,youcandesignaform,indicatingthepoorbasiccauses,currentincome,poverty,supportmeasures,implementationofthisgeofleadingcadresimplementmonitoringsystemsforpovertyalleviation,eachpoorhouseholdsidentifiedapackagecost.Intthegridmanagementmodel,integratingpovertyalleviationintogridmanagement,and"makeaheart"activitycombinedpackaplemenntsforpovertyeradication.Therefore,theCountyOfficeforpovertyalleviationtoevaluationeffortsinthisregard.Toimhievementshavebeenrecognizedbythepoorforpovertyalleviationthroughacceptance,whichweputforwardhigherrequiremeouracuseImplementation.Afteracceptance,alsothroughspotchecks,visits,telephonesurveyslookingactivities.Thismeansthat2015standardsis......Yuan,higherstandardsispoverty.SuperioracceptancetoentrustathirdpartyinstitutionfromHondofardirection,moreeasilybyasuperiorexamination.Povertyassessmentistolookatthepercapitanetincomeofthepooreologicalenvironment,jobsecuritymeasures）,theserequirementsareverystraightforward,specificstandards,alsohasaclecultureandentertainmentvenues,fitnesscenters,hasagoodec2schooleducation,-cekitchen,healthservices,sanitationsystem,preway"path,power,throughwater,throughradio,television,information;"Ten"thehanlaobaoshoufields,richprojects,Offi-ten"（"five-evaluationisveryclear,thatis,"fivelevel-imelymanner,analysesrelevantdepartmentsstrivefor.（E）toimplementthepovertyassessmentresponsibilities.Ofvillagetoincreaseoverthepreviousyear...and...respectively.Inthisregard,thefinancialDepartmenttodispatchinatpursuingthederegulationofwork.Thisyearontheamountoffundsonfightingforthedepartmentsconcernedrelatedfunds,aimstoconcentratefinancialresourcesforbigundertakings.Authoritiesdonotthinkthathaslessautonomy,-bundleintegrationethatoidingduplicationofinputsandwasteofresources,effectiveintegrationofpovertyrelieffunds...Heretoremindeveryonthe"channel,usethesame,anduse"principle,theimplementationofprojectplanning,fundingandmanpowerarrangements,avcompensationaccordingtoprojectneeds,inaccordancewith-ironmentalwork,atmosphericindexranked4thinthecitytoobtainecoidentialandbusinesssuitableforswimmingandraisinglivingandworkingenvironment.Lastyear,wegotgoodgradestheenvorresrotection.Dowellenvironmentalprotectionwork,wekeepthesideofthemountains,nortothemassestocreateasuitablefosedtobuild"greenmountainsandbeautiful,happyandharmonious"new......Target,whichisthebasisofenvironmentalppropenvironmentalprotectioninconstructionofecologicalcivilizationisthefocusononeofthesixbattlethisyear.XianWeie.Whentheexamination,whichthepoordon'thavetimetogetoutofpoverty,andholdingpeopleaccountable.Third,on
16（一次函数y=kx+b交y•轴的负半轴，且y•的值随x•的增大而减少，则k____0，b____0（（填“>”、“<”或“,”）
xy,,,30,17（已知直线y=x-3与y=2x+2的交点为（-5，-8），则方程组的解是________（,220xy,，,,
18.已知一次函数y=-3x+1的图象经过点（a，1）和点（-2，b），则a=________，b=______（19（如果直线y=-2x+k与两坐标轴所围成的三角形面积是9，则k的值为_____（20.一次函数y=ax+b，若a+b=1，则它的图象必经过点（）
A、（-1,-1）B、（-1,1）C、（1,-1）D、（1,1）21.已知y+2与x-1成正比例，且x=3时y=4。
（1）求y与x之间的函数关系式;
（2）当y=1时，求x的值。
22.已知，函数，试回答:
ykxk,,，,1321，，
3
（1）k为何值时，图象交x轴于点（，0）,
（2）k为何值时，y随x增大而增大,4
23.蜡烛点燃后缩短长度y（cm）与燃烧时间x（分钟）之间的关系为ykxk,,0，已知长为，，
21cm的蜡烛燃烧6分钟后，蜡烛缩短了3.6cm，求:
（1）y与x之间的函数解析式;
（2）
此蜡烛几分钟燃烧完。
24.一次函数y=kx，b的自变量的取值范围是,3?
x?
6，相应函数值的取值范围是,5?
y?
2，求一次函数的解析式。
1y,,x，225.直线L:
与x轴、y轴分别交于A、B两点，在y轴上有一点C（0，4）,动点M2
从A点以每秒1个单位的速度沿x轴向左移动。
（1）求A、B两点的坐标;
（2）求?
COM的面积S与M的移动时间t之间的函数关系式;
（3）当t何值时?
COM?
?
AOB，并求此时M点的坐标。
C组
11.下列三个函数y=-2x,y=-x,y=（2-3）x共同点:
（1）;
（2）;（3）4
2.下面函数图象不经过第二象限的为（）
（A）y=3x+2（B）y=3x,2（C）y=,3x+2（D）y=,3x,23.知函数y=（2m+1）x+m-3
（1）若函数图象经过原点,求m的值;
（2）若函数图象在y轴的截距为,2，求m的值;（3）若函数的图象平行直线y=3x–3，求m的值;（4）若这个函数是一次函数,且y随着x的增大而减小,求m的取值范围.
4.某市规定如下用水收费标准:
每户每月的用水量不超过6立方米时,水费按每立方米a元收费,超过6立方米时,不超过的部分每立方米仍按a元收费,超过的部分每立方米按c元收费,该市某户今年9、10月份的用水量和所交水费如下表:
月份用水量收费（元）
vingandworkingenvironment.Lastyear,wegotgoodgradestheenvironmentalwork,atmosphericindexranked4thinthecitydeofthemountains,nortothemassestocreateasuitableforresidentialandbusinesssuitableforswimmingandraisinglithesirmonious"new......Target,whichisthebasisofenvironmentalprotection.Dowellenvironmentalprotectionwork,wekeeptionisthefocusononeofthesixbattlethisyear.XianWeiproposedtobuild"greenmountainsandbeautiful,happyandha,onenvironmentalprotectioninconstructionofecological
升级会员 