मराठी

Can there be a time-temperature graph as follows? Justify your answer.

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प्रश्न

Can there be a time-temperature graph as follows? Justify your answer.

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उत्तर

This can be a time-temperature graph, as the temperature can increase with the increase in time.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 13: Introduction to Graphs - EXERCISE 13.1 [पृष्ठ १६३]

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एनसीईआरटी Mathematics [English] Class 8
पाठ 13 Introduction to Graphs
EXERCISE 13.1 | Q 7. (i) | पृष्ठ १६३

संबंधित प्रश्‍न

For an experiment in Botany, two different plants, plant A and plant B were grown under similar laboratory conditions. Their heights were measured at the end of each week for 3 weeks. The results are shown by the following graph.

  1. How high was Plant A after (i) 2 weeks (ii) 3 weeks?
  2. How high was Plant B after (i) 2 weeks (ii) 3 weeks?
  3. How much did Plant A grow during the 3rd week?
  4. How much did Plant B grow from the end of the 2nd week to the end of the 3rd week?
  5. During which week did Plant A grow most?
  6. During which week did Plant B grow least?
  7. Were the two plants of the same height during any week shown here? Specify.

The following graph shows the temperature forecast and the actual temperature for each day of a week.

  1. On which days was the forecast temperature the same as the actual temperature?
  2. What was the maximum forecast temperature during the week?
  3. What was the minimum actual temperature during the week?
  4. On which day did the actual temperature differ the most from the forecast temperature?

Can there be a time-temperature graph as follows? Justify your answer.


The following table shows the number of patients discharged from a hospital with HIV diagnosis in different years:

Years: 2002 2003 2004 2005 2006
Number of patients: 150 170 195 225 230

Represent this information by a graph.


Draw the temperature-time graph in each of the following cases:

Time (in hours): 7:00 9:00 11:00 13:00 15:00 17:00 19:00 21:00
Temperature (°F) in: 100 101 104 102 100 99 100 98

Find out from the growth chart

  • Will the plant keep growing all the time? What will be its length on the 100th day? Make a guess!

A line graph can also be a whole unbroken line.


Study the given graph and complete the corresponding table below.


Plot a line graph for the variables p and q where p is two times q i.e, the equation is p = 2q. Then find.

  1. the value of p when q = 3
  2. the value of q when p = 8

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.

  1. Why does it make sense to connect the points in this situation?
  2. Describe the overall trend, or pattern, in the way the temperature changes over the time period shown on the graph.
  3. Estimate the temperature at noon and 8 pm.

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