2021年七年级数学第三章第二节.pdf

Word 版可编辑套题郑 重 声 明本文档为教师用书配套增值产品，仅供教师个人授课使用，切勿用于商业用途，对私自上传其他网络平台（百度文库、豆丁网、学科网、菁优网等）的行为，本公司将追究其法律责任！第二节一次函数姓名：_ 班级：_ 限时：_分钟1(2019广安)一次函数 y2x3 的图象经过的象限是()A一、二、三B二、三、四C一、三、四D一、二、四2(2019绍兴)若三点(1，4)，(2，7)，(a，10)在同一直线上，则a 的值等于()A1 B0 C 3 D 4 3(2018深圳)把函数 yx 向上平移 3 个单位，下列在该平移后的直线上的点是()A(2，2)B(2，3)C(2，4)D(2，5)4(2019杭州)已知一次函数y1axb 和 y2bxa(ab)，函数 y1和 y2的图象可能是()精品w o r d 可编辑资料-第 1 页，共 9 页-Word 版可编辑套题5(2019枣庄)如图，一直线与两坐标轴的正半轴分别交于A，B两点，P是线段 AB上任意一点(不包括端点)，过点 P分别作两坐标轴的垂线与两坐标轴围成的矩形的周长为8，则该直线的函数表达式是()Ayx4 Byx4 Cyx8 Dyx8 6(2019东营)甲、乙两队参加了“端午情，龙舟韵”赛龙舟比赛，两队在比赛时的路程 s(米)与时间 t(秒)之间的函数图象如图所示，请你根据图象判断，下列说法正确的是()A乙队率先到达终点B甲队比乙队多走了126米C在 47.8 秒时，两队所走路程相等D从出发到 13.7 秒的时间段内，乙队的速度慢7(2019天津)直线 y2x1 与 x 轴的交点坐标为 _8(2019成都)已知一次函数 y(k 3)x 1 的图象经过第一、二、四象限，则 k 的取值范围是 _9(2018济宁)在平面直角坐标系中，已知一次函数y2x1 的图象经过精品w o r d 可编辑资料-第 2 页，共 9 页-文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10 Word 版可编辑套题P1(x1，y1)、P2(x2，y2)两点若 x1x2，则 y1_y2.(填“”“”或“”)10(2019烟台)如图，直线 yx2 与直线 yaxc 相交于点 P(m，3)，则关于 x 的不等式 x2axc 的解为_11(2019定远县二模)已知：将直线 y12x1 向上平移 3 个单位后得直线ykxb，则直线 ykxb 与 x 轴的交点坐标为 _12(2019天门)某农贸公司销售一批玉米种子，若一次购买不超过5 千克，则种子价格为 20 元/千克若一次购买超过5 千克，则超过 5 千克部分的种子价格打 8 折设一次购买量为x 千克，付款金额为y 元(1)求 y 关于 x 的函数解析式；(2)某农户一次购买玉米种子30 千克，需付款多少元？13(2019黑龙江)小明放学后从学校回家，出发5 分钟时，同桌小强发现小精品w o r d 可编辑资料-第 3 页，共 9 页-文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10 Word 版可编辑套题明的数学作业卷忘记拿了，立即拿着数学作业卷按照同样的路线去追赶小明，小强出发 10 分钟时，小明才想起没拿数学作业卷，马上以原速原路返回，在途中与小强相遇两人离学校的路程y(米)与小强所用时间 t(分钟)之间的函数图象如图所示(1)求函数图象中 a 的值；(2)求小强的速度；(3)求线段 AB的函数解析式，并写出自变量的取值范围14(2019乐山)如图，已知过点B(1，0)的直线 l1与直线 l2：y2x4 相交精品w o r d 可编辑资料-第 4 页，共 9 页-文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10 Word 版可编辑套题于点 P(1，a)(1)求直线 l1的解析式；(2)求四边形 PAOC 的面积1(2019聊城)某快递公司每天上午9：0010：00 为集中揽件和派件时段，甲仓库用来揽收快件，乙仓库用来派发快件，该时段内甲、乙两仓库的快件数量 y(件)与时间 x(分)之间的函数图象如图所示，那么当两仓库快递件数相同时，此刻的时间为()A9：15 B9：20 C 9：25 D9：30 2(2019盐城)如图，在平面直角坐标系中，一次函数y2x1 的图象分别精品w o r d 可编辑资料-第 5 页，共 9 页-文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10 Word 版可编辑套题交 x、y 轴于点 A、B，将直线 AB绕点 B按顺时针方向旋转45，交 x 轴于点 C，则直线 BC的函数表达式是 y_3(2019重庆 B卷)一天，小明从家出发匀速步行去学校上学，几分钟后，在家休假的爸爸发现小明忘带数学书，于是爸爸立即匀速跑步去追小明，爸爸追上小明后以原速原路跑回家，小明拿到书后以原速的54快步赶往学校，并在从家出发后 23 分钟到校(小明被爸爸追上时交流时间忽略不计)，两人之间相距的路程 y(米)与小明从家出发到学校的步行时间x(分钟)之间的函数关系如图所示，则小明家到学校的路程为 _米4(2019吉林)甲、乙两车分别从A，B 两地同时出发，沿同一条公路相向行驶，相遇后，甲车继续以原速行驶到B 地，乙车立即以原速原路返回到B 地甲、乙两车距 B地的路程 y(km)与各自行驶的时间x(h)之间的关系如图所示(1)m_，n_；(2)求乙车距 B地的路程 y 关于 x 的函数解析式，并写出自变量x 的取值范围；(3)当甲车到达 B地时，求乙车距 B地的路程精品w o r d 可编辑资料-第 6 页，共 9 页-文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10 Word 版可编辑套题参考答案基础训练1C 2.C 3.D 4.A 5.A 6.C 7(12，0)8.k 10.x 111.(4，0)12解：(1)根据题意，得当 0 x5 时，y20 x；当 x5 时，y200.8(x 5)20516x20.(2)把 x30 代入 y16x20，即 y163020500.答：一次购买玉米种子30 千克，需付款 500元13解：(1)a 3005(10 5)900.(2)小明的速度为：300560(米/分)，小强的速度为：(900602)12 65(米/分)(3)由题意，得 B(12，780)，设 AB所在的直线的解析式为ykxb(k0)，把 A(10，900)，B(12，780)分别代入得：10kb900，12kb780，解得k60，b1 500，则线段 AB所在的直线的解析式为y60 x1 500(10 x12)14解：(1)点 P(1，a)在直线 l2：y2x4 上，精品w o r d 可编辑资料-第 7 页，共 9 页-文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10 Word 版可编辑套题2(1)4a，解得 a2.则点 P的坐标为(1，2)设直线 l1的解析式为 ykxb(k0)，那么kb0，kb2，解得k1，b1，则 l1的解析式为 yx1.(2)直线 l1与 y 轴相交于点 C，点 C的坐标为(0，1)又直线 l2与 x 轴相交于点 A，A 点的坐标为(2，0)，AB 3.S四边形 PAOCSPABSBOC1232121152.拔高训练1B 2.y 13x1 3.2 080 4解：(1)4 120 解法提示 根据题意可得 m 224，n2802(2803.5)120.(2)当乙车与甲车相向行驶时，设y 关于 x 的函数解析式为 ykx(0 x2)图象经过(2，120)，2k120.解得 k60，y关于 x 的函数解析式为y60 x；当乙车和甲车同向行驶时，设y 关于 x 的函数解析式为 yk1xb(2x4)，精品w o r d 可编辑资料-第 8 页，共 9 页-文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2B8V4 ZC4B2Q6Q5N10文档编码:CY8Y7E4T3X2 HE3D4P2