2024年5月北美A卷 · 第 11 题

2024年5月北美A卷 · 原库模块 2 · Q11 原库参考解析

During an experiment, the temperature, in degrees Celsius (ºC), of a mixture was recorded to the nearest integer at certain times. The scatterplot shows the recorded temperature y , in ºC, of the mixture x hours after the start of the experiment.

What was the average rate of change of the recorded temperature of the mixture over time, in ºC per hour, from x = 1 to x = 3?