Study the following line graph and answer the question based on it. Number of…
2023
Study the following line graph and answer the question based on it. Number of Vehicles Manufactured by Two Companies over the Years (Number in Thousands)
What is the difference between the number of vehicles manufactured by Company Y in 2000 and 2001?
- A.
50000
- B.
42000
- C.
33000
- D.
21000
Attempted by 2 students.
Show answer & explanation
Correct answer: D
Concept: In a line graph, each labelled point gives the exact value of that series for that year. To find the difference between two years for one company's output, read that company's own two data points directly from the graph and subtract the smaller from the larger — the other company's series is irrelevant to this calculation.
Identify the series for Company Y — the line whose points are labelled 139, 120, 100, 128, 107, 148 for 1997-2002 respectively.
Read Company Y's value for 2000 directly from its labelled point: 128 (thousand vehicles).
Read Company Y's value for 2001 directly from its labelled point: 107 (thousand vehicles).
Subtract the 2001 value from the 2000 value: 128 − 107 = 21 (thousand vehicles).
Cross-check: 2000's reading (128) is higher than 2001's (107), so the difference should be a positive quantity around 20-30 thousand, not close to 50 or 42 thousand (which would only arise from comparing across companies or across the wrong pair of years) — this confirms 21 thousand, i.e. 21,000 vehicles, as the required difference.