# 5932 Non-linear Real World Graphs

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| By Anthony Nunan
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Anthony Nunan
Community Contributor
Quizzes Created: 132 | Total Attempts: 44,578
Questions: 9 | Attempts: 112

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This test is graded manually, as the questions asked do not give an exact answer, but are often estimates based on a graph.

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### From the graph you have drawn for the above data, find the girth of tree at 4 years old.

Explanation
You can use twopoints to 'estimate' the value between two points, (3.7, 66.4) & (5.6, 82.4) - but because it is linear, and the shape of the graph is non-linear, it would give a value around 69cm - reasonably accurate, but not perfect. However, given these are 'estimates', it would be a suitable answer.

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### At what age would the girth of the tree be 80cm?

Explanation
You can use twopoints to 'estimate' the value between two points, (3.7, 66.4) & (5.6, 82.4) - but because it is linear, and the shape of the graph is non-linear, it would give a value around 5.32 years - which is reasonably accurate, but not perfect. However, given these are 'estimates', it would be a suitable answer.

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### This graph shows the temperature of a person admitted to hospital at 9:00 and the temperature recorded between 9am and 8pm.For how long did the persons temperature rise before reaching a maximum?

Explanation
The graph shows the temperature of a person admitted to the hospital from 9:00 am to 8:00 pm. The temperature starts rising and reaches its maximum point after 3 hours. Therefore, it can be concluded that the person's temperature rose for 3 hours before reaching a maximum.

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### This graph shows the temperature of a person admitted to hospital at 9:00 and the temperature recorded between 9am and 8pm.What is the maximum temperature in degrees Celcius recorded?

Explanation
The maximum temperature recorded is 40 degrees Celsius.

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### This graph shows the temperature of a person admitted to hospital at 9:00 and the temperature recorded between 9am and 8pm.At what time was the temperature 39 degrees?

Explanation
The temperature of 39 degrees was recorded at 10:00, 14:00, 16:00, and 18:50. These times correspond to 10am, 2pm, 4pm, and 6:50pm.

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### This graph shows the temperature of a person admitted to hospital at 9:00 and the temperature recorded between 9am and 8pm.What was the temperature at 18:00?

Explanation
The graph shows the temperature of a person admitted to the hospital at 9:00 and records the temperature between 9am and 8pm. Since the given answer is 39.5 degrees Celsius, it can be inferred that the temperature at 18:00 was 39.5 degrees Celsius.

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