1、1xy P x0,y0), y0=kx0 x0y0=kOA=x0 OB=y0S OAPB=OAOB=x0 y0=x0y0=k y=kx k0 S OAPB=k1 y=kx P x y A B OAPB ABoPxy P x0,y0), y0=kx0 x0y0=kOA=x0 OB=y0S OAPB=OAOB=x0 y0=x0y0=k y=kx k0 S OAPB=k P x P x PA y=3x A A AB y B P OPAB B AoP2xy P x0,y0), y0=kx0 x0y0=kOM=x0 ON=y0S OAPB=OMON=x0 y0=x0y0=k k=12 y=kx k0 S
2、OAP=k 2 y=kx P x A OAP AoP3CC,2) y= k x MMNxNSMON=2 k( )(A)2 (B)2 (C) 4 (D) 41AC AxBCyDRtAOBS1RtCODS2, Py,? 12y=3x3.,P,Pxy,3, ,2) y= k x M MNN SMON=2 k) (B)2 (C) 4 (D) 4234Cy=3x3.,P,Pxy,3, ,2) y= k x MMNxNSMON=2 k( ) (A)2 (B)2 (C) 4 (D) 423 1y=k1x+by=k2xABAmn,BA-m-nAxByCSABC= A m,n), B -m,-n),C m,-n) n=k2m mn=k2AC=2n BC=2mSABC=12BCAC=122m 2n=2mn y=kx m0 n0 SABC=2mn变B1:,ABy=1X ACyBCxABCS A1 B2CS2 D)1S2152y=1x11,12SABC=_1_(A)s=1 (B) s=2(C)1S2 (D)y=kx(k0)y=1xACAxxBBC.ABCS _ 2变变167891011
