2021年(广东省考卷)中考数学复习专题测试卷-函数

2222年广省卷中数复专测卷函数（满分120）一选题共10小题，分分每题3分yA0

xB0Cxy1yA2B2

D+0A

Bb

C

DbMx5yMA

B5

C

D4y+1+1yx+6A1B24C5D24yaxy+aA

B

D

12121212+1y1m2nyyxA2xCxx1

B2D2x4A4

B5

C2

Dy

A2

B

C2

D210+bx+cx3+cABb0c3+0

a0A

B

C

D二填题共7小，满28分，小分

22112233420202211223342020y3+812213xb0yx+b514xx+1k15eq\o\ac(△,Rt)OABOA6OAyOBD4mABEE16AB30kmhykmBC1

17ayxyP0PyaPbPPbPP三解题共8小，满62分）

12112118270A60/kmxh1A219+1kkDyCm212x

20300201y221OAABB3xnyDBBEBDE1D2BE222OBm12AB

212121221212121223a2yA012Pt+3y3CQBCxmDBDQ241y+cA1CEm3ElxM1C1lDCAD3BMyNAMMONS

111121225yAAEBFF11EOC2AOB903yyxyZJMNd+dA

222222参考答案一选题共10小题，分分每题3分解】x0x0故：解】1y故：B解】a0a00ABCbDb故：B解】MxyM5yyxMx4M4故：解答+1+11y+6+6x+32

31123324x+6x故：B解】00y+b+

a0b0yaxb+aa0b0yaxb+aa0y+bx+ayaxb+故：B解】xx1故：解】MN4BC10DOy100

2222122212222212221205ay

x

+01477mxbx+bx

+bm

+b

+bAy20x10

xbx

x+bx

+b

+

+5

故：B解】23x2xy3xx2故：A

222210答abyx+A3

+0cac3a+2+34++y+x1310x1ya+cbc3aa0故：二填题共7小，满28分，小分答31812答yxxx0b0byxbxb0b

△OAB22△OAB224b4413答yx+0byx+2y2+252+2+5yxyx+714答yk+1x410k1kkkk15答DFFD4OFDFOABDFOAABmD

11122121221112212122yDky

xy6

16答5035km/h

kmh2+15250+15

C73

km17答P0y1P1xx222

12233345674824202010101010212222122333456748242020101010102122222P2PP22

2三解题共8小，满62分）18答kxbyx022y9090A902.5+1.5419答m2+12m+1m112A12k0k2y2

Dxx2x20答x40300+2020x+60002+10020x2.5+6125a

x2.5y61252.5602.5612521答OA212y332n1yy3yDxyD12BE+BDk122bBEx22答AEyEBFAEOBFO242OBAOBAOEBOFBOFAOEBOFBFOEOF4

2CCEQGHBCHAASAGBHa44abC31yC1m3yAB+bA244yx+10

23A02aayx

122BDQDEBBDQ122BDQDEBBDQ2yt2222

32yx+m2+mm0

myxmyDmCQBEy+QBxy50S△△

m0eq\o\ac(△,S)

eq\o\ac(△,S)BDQ2212M22M1eq\o\ac(△,S)BDQ2212M22M1

24yx+3x02m0D

CACCD

AD

ACD

3m0Mm

m+3BM+

BM1x+3x+303mON3m+3S

y+1+3SONm+3Smm

ABeq\o\ac(△,S)AOABeq\o\ac(