How to Describe a Line Graph in IELTS Task 1 (With Examples)
Line graphs are the most common Task 1 chart type. Here's a step-by-step approach — from reading the data to writing a Band 7 response.
Line graphs are the single most common chart type in IELTS Academic Task 1. They almost always show change over time — usually years or decades — for one or more categories. The challenge is not reading the data; it's deciding what to include, what to leave out, and how to describe trends precisely without repeating the same words.
Step 1: Read before you write
Before writing a single word, spend 60–90 seconds analysing the graph. Answer these questions: What is the overall period shown? What are the categories (lines)? Which line is highest overall? Which changed the most dramatically? Are there any crossover points — where one line overtakes another? Are there any peaks, troughs, or plateaus?
Your answers to these questions form your overview and guide what goes in your body paragraphs.
Step 2: Write the introduction
The introduction paraphrases the prompt — do not copy it word for word. Change the structure, use synonyms, and reframe the main idea in one or two sentences.
✗ Copied from prompt (loses marks)
The graph shows the number of international tourists visiting four countries from 1995 to 2020.
✓ Paraphrased introduction
The line graph illustrates how the volume of international tourist arrivals changed across four nations over a 25-year period from 1995 to 2020.
Step 3: Write the overview — the highest-impact paragraph
The overview summarises the 2–3 most important features of the graph without citing any specific figures. Focus on the dominant trend, the most dramatic change, and any significant comparisons between lines.
✓ Example overview for a line graph
Overall, all four countries experienced growth in tourist arrivals over the period, though the rate of increase varied considerably. Country A saw the most dramatic rise and emerged as the top destination by the end of the period, while Country D recorded comparatively modest growth throughout.
Step 4: Select and group data for the body paragraphs
Do not describe every data point on the graph — that is not what Task Achievement rewards. Select the most significant data points and group logically. Common grouping strategies:
- Group by trend: lines that increased together vs. lines that decreased or remained stable
- Group by time period: what happened in the first half of the period vs. the second half
- Group by rank: highest-performing categories together, lowest together
Each body paragraph should introduce the group, describe the overall trend, and cite 2–3 specific data points with figures and years.
Vocabulary for describing line graph trends
| Trend type | Verb options | Noun options |
|---|---|---|
| Steady rise | increased, grew, rose, climbed | a steady increase, a gradual rise, upward growth |
| Sharp rise | surged, soared, shot up, jumped | a sharp rise, a dramatic increase, a spike |
| Steady fall | decreased, declined, fell, dropped | a steady decline, a gradual fall, a downward trend |
| Sharp fall | plummeted, crashed, tumbled | a sharp drop, a steep decline, a dramatic fall |
| Plateau | levelled off, stabilised, remained stable | a plateau, a period of stability |
| Peak | peaked at, reached a high of | a peak, a high point |
| Trough | bottomed out at, reached a low of | a trough, a low point |
| Fluctuation | fluctuated, varied, oscillated | fluctuations, variation, an irregular pattern |
How to vary your sentence structures
One of the most common weaknesses in Task 1 responses is sentence repetition — using 'increased' and 'decreased' in the same structure every time. Mix noun and verb forms to vary your expression.
✗ Repetitive (Band 5–6)
Sales increased from 20 to 40 million in 2005. Then sales decreased to 30 million in 2010. After that sales increased again to 50 million in 2015.
✓ Varied (Band 7)
Sales rose from 20 to 40 million by 2005 before experiencing a moderate decline to 30 million in 2010. This was followed by a sustained recovery, with figures climbing to 50 million by 2015.
Describing crossover points
Crossover points — where one line overtakes another — are significant features that must be mentioned. They are often where the most interesting story in the graph lies.
✓ Describing a crossover
Although Country B led in tourist arrivals until 2005, Country A overtook it in that year and continued to widen the gap significantly through to 2020.
A complete Band 7 structure
- 1Introduction (2 sentences): paraphrase the prompt
- 2Overview (2–3 sentences): dominant trends, no figures
- 3Body paragraph 1 (4–6 sentences): first group of lines — describe trends with specific data
- 4Body paragraph 2 (4–6 sentences): second group of lines — describe trends with specific data, note any comparisons with Body 1
Target length: 160–200 words. Do not pad with unnecessary observations — precision and selection matter more than length above 150 words.
Tip
When you practise Task 1 with IELTS Memo, the AI feedback checks whether your overview avoids specific figures, whether your body paragraphs include enough specific data, and whether you've selected the most important features rather than listing everything. These are the exact criteria examiners use.
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