二次函数系数a、b、c与图像的关系填空题专题练习(含答案)

19abc1y=-x2+bx+cbcb0c02(1)a______0(2)b______0(3)c______0(4)b24ac______0.3y=ax2+bx+c(a0)-202a-3b0.(=)4y=ax2+bx+cy=abx+c_____5y=ax2+bx+cabc0b=2aa+b+c0a-b+c0296y=ax2+bx+cxA(10)Bc;b;ba;ab2c..7y=x2bxcy=bxc__________8x2+bx+cac_____0=9y=ax2+bx+c(a0):aca+b+c4a-2b+c2a+bb2-4ac0.10y=ax2bxc(a0)abc=0b2aax2bxc=031a2bc0()11y=ax2+bx+cabc0ab+c02a=b4a+2b+c02y1y2y1y23912y=ax2+bx+c___________ax2+bx+c0-1x5a-b+c0b2-4ac04a+b0.13y=ax2+bx+ca010x=24a+b=09a+c3b8a+7b+2c0x1yx14y=ax2+bx+ca02a+b=0a+cbx30abc015y=ax2+bx+cA30X=1b24ac2a+b=0a+b+c0B2.5y1C0.5y2y1y24916y=ax2+bx+ca0abc0b2aa+b+c=0ax2+bx+c=0318a+c017y=ax2+bx+ca02a+b0abc0b24ac0a+b+c04a2b+c018y=ax2+bx+cx=-10.50abc0a2b+4c=025a10b+4c=03b+2c0abmamb19y=ax2+bx+ca0b24acabc02a-b=08a+c09a+3b+c0___________.5920y=ax2+bx+cb24ac00abc0abc021y=ax2+bx+ca05c=0x=1x=1y=2aam2+bm+a0m1A100y1B100y2y1y222y=ax2+bx+ca0a+b+c0ab+c0b+2a0abc023y=ax2+bx+ca0abc0b24ac+502a+b0ab+c0y=ax2+bx+ca0x106924mnmn2=1m2+2n2+4m125y=ax2+bx+c-100-14)1(4)1(22aaaa=.26y=ax2+bx+cxA101ny0203x3y03a+b01a3n427y=ax2+bx+ca+b+c0ab+c1abc04a2b+c028y=ax2+bx+cx-1030b-2a=0abc0a-2b+4c08a+c0.7929y=ax2+bx+ca0b04a+2b+c0ab+c0a+c2b2______________.30y=ax2bxcc=2b24ac0x=1ya+b+c31y=ax2+bx+c(a0)1b2-4ac0c0b0.29a+3b+c02c3b8a+c0.32y=ax2bxc(a0)(10)a0abc00.33y1=ax+223y2=x32+1A13AxBCxy2a=1x=0y2y1=42AB=3AC8934A13AxBCxy2x=0y2-y1=6AB+AC=1035y=x2+bx+cy=xb24c03b+c+6=01x3x2+b1x+c02322cb.36y=ax2+bx+cA(-20)-10CDEFG1abc0(2a.9912(1)(2)(3)(4)345678910111213141516173181920212223244252a26272829.30313233343536