2023年12月C卷 · 第 12 题

2023年12月C卷 · 原库模块 2 · Q12 原库参考解析

The scatterplot shows the relationship between the length of eruption y, in hours, and the number of days after January 11, x, for some eruptions of a certain geyser.

What is the average rate of change, in hours per day, of the length of eruption from the eruption on January 17 to the eruption on January 19?