Đại số 9 tuần 12 tiết 23+24

Đa ̣ i số 9 Chuâ ̉ n KT-KN Hoạt động của GV va ̀ HS Nô ̣ i dung                                               !          "#$%& '     !( )            Hoa ̣ t đô ̣ ng 1: (15’) *+ ,- ?1 *+./0  ! & 123,45674 8 9/: ;<& ,=>  ?/456!- !@& 3(45674 AB'B>BACB'CB>C& DEFGHI!J74 AB'B>!-74ACB'CB>CD ,=K  AB'B>    L  K  ACB'CB>C     & *+ ,- ? 2 "./0%& M,.J!- M5N& *+=+?O37PQR B7PSQ    M!-MKFTU     D ,=    & *+?U,*VW$& ,=  ,*V& *+=XY:MKZ 0@4- D ,="$LK% *+=[    /\T7D *+>]^",*VW$%& ,=_    `            "#$% Hoa ̣ t đô ̣ ng 2: (19’) *+  5),  !( )           `$ !  #$& 1. Đồ thị của hàm số y = ax + b (a≠0) ?1 A"3LM%B'"MLa%B>"KLb% AC"3LMK%B'C"MLaK%B>C"KLbK%  >74AB'B>:-& >74ACB'CB>C:-& [  AB'B>∈"5%BACB'CB>C∈"5C% c  "5%dd"5C%&  ? 2     +?O7PQRB7PQ -eMK7PQ-eM -K!P& +?$IMKM&$KK& [!GfP-eMK-Y :  !?Y  M!- Z0;4F<gK& ▪ Tổng quát: XfP  -e "#$%-<Y:= >Z0;4F<gL ,  !?Y  R #$LO!?Y:R$& hChu ́ y ́ : X          "#$%             "               %& 2. Ca ́ ch vẽ đồ thị của hàm số y=ax+ b (a≠0) hV$c  &X           T      i"$L$%!    A"3L3%& hV#$= > $c  ⇒A"$L%∈i& 3 4 2 -2 5 MK MK > 3BW K $  3  > ' Đa ̣ i số 9 Chuâ ̉ n KT-KN Hoạt động của GV va ̀ HS Nô ̣ i dung     "#$%& +( )                  "#$%& ,=>        !( ) & *+=> ,j!--m DK ,=M(    .!k fPQ-eMlK!-     lMK& ,5??/!kfP!- !@& > $c   b a = − ⇒'" b a − L$%∈i +( )     T  A!  '             & DK mXfPQ-eMlK > $⇒lK⇒fPTA"$LlK% > $⇒3BW⇒fPT'"3BWL$% X    A'            & mXfPQ-elMK > $⇒K⇒fPT>"$LK% > $⇒3BW⇒fPT'"3BWL$% X    '>            &  3. Củng cố - Dă ̣ n do ̀ : (5’) *Cu ̉ ng cô ́ : XfP-e"#$%-ID>7!kfP-e"#$%D XfP-e-Y:`  DV    D ,=XfP-e-Y:`n$"-efR%B- Y:e`o$"-ePR%& _    3W,*VW3& *Dă ̣ n do ̀ : [  ! )   c ) !    !( )           "#$%& 'p+[=3bB3q,*VW3& p      /& rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr M A Đa ̣ i số 9 Tuần 12 tiết 24 LUYÊ ̣ N TÂ ̣ P I. MỤC TIÊU: Kiến thức: ,!( ) sfPQ-e"#$%Bts5Ut7I?; @7fP& +k-; fP-e"#$%g77PM4/U-  QYfP!?M0 ;<& - Kĩ năng: uv`c ) !kfP-e"#$%& Thái độ: *7 50twGt7 !U!kfP& II. CHUẨN BỊ: *+=p?:Bxp'p& ,=y00jG/Bxp'p& III. TIẾN TRÌNH DẠY HỌC: 1. Tổ chức lớp ( 1’) 2. Kiểm tra ba ̀ i cu ̃ : ( 7’) ,3=+( )           Kb& ,M=+( )           lMW& 3. Bài mới: (33’) Hoạt động của GV va ̀ HS Nô ̣ i dung *+=> ,    3b,*V& +kfP-eMM!-fP -eO3U0 ;< ,=X  `c )     & >    /!( ) !  !  & _    M(  !( ) B) ,!( )             & *+    =pc   A T/ c          MM& ,=p(       *+    & *+=  p(      !( )  c             >   D ,=  M& *+=pc        >D ,=>"MLM%& Dpt5Ut7A'>D *+=VzA!F!?'> ⇒ , A'>  1 2 &A&'> ,=  /5    c  & *+ ,.-3q( F& >?/-aF&x{F3 ./0&X;5UF.- ./0& ,=          & Bài tâ ̣ p16 SGK tr 51 % %|c          = MM⇔lM⇒lM& +   ;<4A"lMLlM% %+I>∈Y:-( 7!kI F > M ⇒  > M&+G ;<Q>"MLM%& , A'>  = × × = 1 1 AH BC 2 2 &a&Ma" M % Ba ̀ i tâ ̣ p 17 SGK tr 51-52 XfP-e3-Y:TM 4y"$L3%!-A"3L$%& p}fP-elK-Y :TM4E"$LK%!-'"KL$% K 5 6 4 2 -2 K 3 y ' > $ 3   W E 3 A Đa ̣ i số 9 *+=pj<4>Ft~ID ,=   <  >•83 K& *+=[7t  <4>& ,=pc      & *+=xet!∆A'>2 tID ,R/0. ---3q& *+j3-.       4?/GH& ,=( 5 ) & *+.t!- -€• ?& rXj!---3‚/2",*VWM% *+ , ;<( F& ,          & X  5             &>    `  ( 5 ) !     (  & *+=V4-Q7F& &pj<4>-UQ/I 3lK⇔MM⇔3 p3!- 3sM& +G>"3LM%BA"l3L$%B'"KL$% &Vz>⊥A';&∆A>!;A>  MM HCAH + MM‚MM MM ==+=  p}'> MM >!7A'>= A'A>'>a MM  MM a 4 2 , A'>  1 2 = × A'&> 1 2 = × a&Ma" M % Bài 18a SGK tr52 %paL33!-   eKF 33K&a ⇔ l3& +G-eF5;Kl3& > $ ⇒ l3 ⇒ A"$Ll3%∈        & > 3 ⇒ K&3l3M ⇒ '"3LM% ∈ fP -e& 4. Hướng dẫn về nhà (4’) [  ! ) 7?!kfPB7j4  564569/: ;<& 'p+[=3‚"%B3ƒ,*VW3lWM& „(    Đươ ̀ ng thă ̉ ng song song va ̀ đươ ̀ ng thă ̉ ng că ́ t nhau. a  KY ́ DUYÊ ̣ T .   /& rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr M A Đa ̣ i số 9 Tuần 12 tiết 24 LUYÊ ̣ N TÂ ̣ P I. MỤC TIÊU: Kiến thức: ,!( ) sfPQ-e"#$%Bts5Ut7I?;