The following graph shows the air

The following graph shows the air temperature in some place during 24hours in January．
Can you tell me
（1）When was the temperature-3℃？
（2）When was it warmest？
（3）When was the temperature zero？

a415255 1年前已收到1个回答举报

zhzhta 幼苗

共回答了19个问题采纳率：84.2% 举报

解题思路：（1）从图象上可以直接看到温度在-3℃时的时间；
（2）可直接从图象上看到温度最高时的时间；
（3）温度在0℃的时间有三个时间点，看图象与x轴的交点．

（1）前一天晚上12点和当天早上8点；
（2）当天下午2点；
（3）前一天晚上8点，当天早上9点和当天下午6点．

点评：
本题考点：函数的图象．

考点点评：此题主要考查了函数图象，关键是同学们要首先了解横纵坐标所表示的意义，然后再看图象．

1年前

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