2025年教学资料:3.2函数的表示方法(分层作业)(解析版)
3.2函数的表示方法分层作业1.因为疫情原因,某校实行凭证入校,凡是不带出入证者一律不准进校园,某学生早上上学,早上他骑自行车从家里出发离开家不久,发现出入证忘在家里了,于是回到家取上出入证,然后改为乘坐出租车以更快的速度赶往学校,令x(单位:分钟)表示离开家的时间,y(单位:千米)表示离开家的距离,其中等待红绿灯及在家取出入证的时间忽略不计,下列图象中与上述事件吻合最好的是( )A.B.C.D.【答案】C【分析】根据它离家的距离与离开的速度判断.【详解】中途回家取证件,因此中间有零点,排除AB,第二次离开家速度更大,直线的斜率更大,只有C满足.故选:C.2.一个面积为100 cm2的等...
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