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Plotting Linear Graphs for Given Values

Question 81iA...

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Question 81(i)

As part of his science project, Prithvi was supposed to record the temperature every hour on Saturday from 6 AM to midnight. At noon, he was taking lunch and forgot to record the temperature. At 8:00 PM, his favourite show came on and so forgot again. He recorded the data so collected on a graph sheet as shown below.

Why does it make sense to connect the points in the situation?

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Solution

If we connect the points, we will obtain a line graph representing the changes in temperature and it will make it easier to understand the change in temperature.

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Q. Question 81(i)

As part of his science project, Prithvi was supposed to record the temperature every hour on Saturday from 6 AM to midnight. At noon, he was taking lunch and forgot to record the temperature. At 8:00 PM, his favourite show came on and so forgot again. He recorded the data so collected on a graph sheet as shown below.

Why does it make sense to connect the points in the situation?

Q. Question 81(iii)

As part of his science project, Prithvi was supposed to record the temperature every hour one Saturday from 6 Am to midnight. At noon, he was taking lunch and forgot to record the temperature. At 8:00 PM, his favourite show came on and so forgot again. He recorded the data. So, collected on a graph sheet as shown below.

Estimate the temperature at noon and 8 PM.

Q. Question 81(ii)

As part of his science project, Prithvi was supposed to record the temperature every hour on Saturday from 6 AM to midnight. At noon, he was taking lunch and forgot to record the temperature. At 8:00 PM, his favourite show came on and so forgot again. He recorded the data. So, collected on a graph sheet as shown below.

Describe the overall trend, or pattern, in the way the temperature changes over the time period shown on the graph.

Q. Question 1(ii)
The following graph shows the temperature of a patient in a hospital, recorded every hour

When was the patient’s temperature

{38.5}^{\circ}

Q. Question 63(v)
The table given below shows the temperatures recorded on a day at different times.

Observe the graph and answer the following questions.
During which hour was there a constant temperature?

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Plotting Linear Graphs for Given Values

Standard VIII Mathematics

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