冀教版八年级下册数学知识点总结

1.2.3.4..1..123.2..12.3...1.11001.100.213603610.7220...360.3.2.1.2.1002.1...1.2.121.2..1.2...30.412345.51.0.5.212Pba,ab3x0y041Pyx,xy2Pyx,xy5P),(ba1Pxb2Pya3POPO22ba6a)xABmb)yCDnxyP-3-2-101ab1-1-2-3P(a,b)YxXYABmXYCDnab7a)P),(nmx),(1nmPb)P),(nmy),(2nmPc)P),(nm),(3nmPxy8a)Pnm,nmb)Pnm,nm9?xy??10PxyPxyaPxayPxayPxyaaaaaXyPOXyPOXyPOXyPOyPOX12xyxyxyyx*YXXY34123455678113602360.21n(n-2)1802360.3ABCD.543214.ABCD54321.5.ABCD.3;2;16.321ABCD.7ABCD.3218ABCD1234ABCDABDOCADBCADBCOCDBAO321ABCD.9ABCD.32112310321ABCD.(4)ABCDAD=ABABCD11ABCD.32112321ABCD(4)ABCDADBCAC=BDABCD14.15.CDABABCDOEFDABCEDCBAABCDOABCDO1ykxbkb0kx0bykxykxb0b0kykx0b0k2y=kx(kk0)k.y=kx(k)kx1bk0y=kxxyk0?y=kxxy(1)y=kxkk0(2)001k(3)k0k0?(4)k0yxk0yx(5)|k|y|k|x3y=kxb(k,bk0)yx.b=0y=kxby=kx.y=kx+b(k)kx1by=kx+b0b-kb0y=kx+b,y=kx|b|.b0b01y=kx+b(kbk0)20b-kb03k0k0b0b000bk00bk00bk00bk4k0yxk0yx.5|k|y|k|x.6b0y=kxbb0y=kxb.0kkxbkkb0k0k0b0b0b0b0b0byxyx4y=kxb..0b.0.b0b0b=0k0yxk0yx5y=kxby=kx|b|b0b0y=kxa+3b-2a+3=kb-2k0OxyyxOOxyyxOOxyyxO6y=kx(kk0)ky=kxb(k,bk0)yx.b=0y=kx.X001k0b-kb0k0k0k0b0,k0b0k0b0k0b0k0yxk0yx|k|y|k|xb0y=kxbb0y=kxb.611bxky01k22bxky02k121kk21bb221kk321kk21bb4121kk712xy34.8ax+b=0aba00.y=ax+bx.9ax+b0ax+b0aba00.101ax+by=c.2.11y=kxby0bx0.y=kxbb0bcxbay222111cybxacybxa2222211111yybcxbabcxbakb-kbbkb221s2