The DAV Maths Book Class 8 Solutions Pdf and DAV Class 8 Maths Chapter 13 Worksheet 2 Solutions of Introduction to Graphs offer comprehensive answers to textbook questions.
DAV Class 8 Maths Ch 13 WS 2 Solutions
The following table gives the temperature at 12:00 noon on seven successive days in Delhi.
|Temp. (in °C)||14||18||16||13||19||20||17|
Plot a graph to show this information.
Scale on x-axis: 1 day = 1 cm
Scale on y-axis: 5°C = 1 cm
The quantity of petrol filled in a bike and the cost of petrol are given in the following table:
|Litres of Petrol Filled||5||8||10||15|
|Cost of Petrol||250||400||500||750|
Draw a graph to show this information.
Scale on the x-axis: 5 units = 2 cm
Scale on the y-axis: 100 units = 1 cm
The temperature of a patient, admitted to the hospital with viral fever, at different times of the day is given below. Draw the temperature-time graph to represent the data:
|Time (in hours)||6:00||8:00||10:00||12:00||14:00|
|Temp. (in °F)||101||102||103||104||100|
Scale on x-axis: 1 hr = 1 cm
Scale on y-axis: 1° = 1 cm
A bus is going on a long journey starting at 4:00 hour. The speed of the bus at different hours is given below:
|Time (in hours)||4:00||6:00||8:00||10:00||12:00||14:00|
|Speed (in km/hr)||30||50||60||45||80||70|
Draw a speed-time graph for the above data.
Scale on the x-axis: 1 hr = 1 cm
Scale on the y-axis: 10 km/hr = 1 cm
The following table shows the amount of wheat grown by Heera in different years:
|Wheat grown (in quintals)||240||220||160||250||270||300|
Plot a graph to illustrate this information.
Scale on x-axis: 1 year = 2 cm
Scale on y-axis: 100 quintal = 2 cm
DAV Class 8 Maths Chapter 13 Value Based Questions
Given below is the number of saplings planted by the Eco-Club members of a school in different years.
|Number of saplings||10||20||30||15||35||25|
(i) Plot a graph for this information.
(ii) What other activities can be taken by Eco-Club members? Name anyone.
(iii) What value of the Eco-Club members is depicted here?
(i) Scale on x-axis, 1 unit = 1 year
Scale on the y-axis, 1 unit = 5 saplings
(ii) Say no to plastic bags, reduce the use of electricity, and take care of animals, birds, plants, etc.
(iii) Eco-Club members take care of the environment.