Question

1. the amount of rainfall in the desert during the first 9 days of the month was recorded. during which interval(s) of time did amount of rainfall increase?

Explanation:

Step1: Analyze the line - graph

Examine the trend of the line representing rainfall over the 9 - day period.

Step2: Identify increasing intervals

Check where the line is going upwards.
From the graph, the rainfall amount increases from Day 1 to Day 2 (from 2 to 3), from Day 5 to Day 6 (from 4 to 5), from Day 6 to Day 7 (from 5 to 7), and from Day 7 to Day 8 (from 7 to 8).

Answer:

Day 1 - Day 2, Day 5 - Day 6, Day 6 - Day 7, Day 7 - Day 8