Line graph

Describe and compare data trends shown in a line graph using clear, factual language.

Overview

In IELTS Academic Writing Task 1, you are given a line graph that shows how something changes over time (e.g., sales figures, population growth, temperature changes).

The graph usually includes one or more lines representing trends, such as changes in population, prices, sales, or other data points.

Your job is to summarize the main trends, compare data, and report significant details using data from the image — without giving personal opinions or reasons.

A visual sample question —

Sample Question

✅Key characteristics :

  • You are given a line graph that shows changes over a period of time.
  • Your task is to describe and summarise the key trends, comparisons, and data shown in the graph.
  • The graph usually covers a specific time period, such as months, years, or decades.
  • You must write at least 150 words, using formal academic language in about 20 minutes.
  • Your report should have three main parts:
    • An introduction (paraphrasing the question)
    • An overview (a summary of the main trends)
    • Body paragraphs (detailed comparisons and data)
  • You should not give personal opinions, only describe what the graph shows.
  • Main trends (e.g., increase, decrease, stability) must be clearly identified and explained.
  • Accurate use of data (numbers and time references) is important to support your description.
  • Paraphrasing the question in the introduction is a key writing skill for this task.
  • You are marked on four criteria:
    1. Task Achievement – How well you describe the key features.
    2. Coherence and Cohesion – How logically your ideas are organised.
    3. Lexical Resource – Your range and accuracy of vocabulary.
    4. Grammatical Range and Accuracy – Your grammar variety and correctness.

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