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Class 8 NCERT Solutions – Chapter 15 Introduction to Graphs – Exercise 15.3

  • Last Updated : 20 Nov, 2020
Geek Week

Question 1: Draw the graphs for the following tables of values, with suitable scales on the axes.

(a) Cost of apples 

Number of apples12345
Cost (in ₹) 510152025

(b) Distance travelled by car

Time (in hours)6 a.m.7 a.m.8 a.m.9 a.m.
Distances (in km)4080120160

(i) How much distance did the car cover during the period 7.30 a.m. to 8 a.m.?

(ii) What was the time when the car had covered a distance of 100 km since it’s start?

(c) Interest on deposits for a year.

Deposit (in ₹)10002000300040005000
Simple Interest (in ₹) 80160240320400

(i) Does the graph pass through the origin?

(ii) Use the graph to find the interest on Rs 2500 for a year.

(iii) To get an interest of Rs. 280 per year, how much money should be deposited?


(a) Represent the “Number of apples” as X-axis and “Cost in Rs” as Y-axis

(b) Represent the “Times (in hrs)” as X-axis and “Distance (in km)” as Y-axis

(i) The car covered 20 km distance during the period 7.30 a.m. to 8 a.m.

(ii) It was 7.30 am, when the car covered a distance of 100 km since it’s start.

(c) Represent the “Simple Interest (in Rs)” on x-axis and “Deposit (in Rs)” on y-axis.

(i) Yes, the graph passes through origin.

(ii) The interest on Rs. 2500 is Rs. 200 for a year.

(iii) Rs. 3500 should be deposited for interest of Rs. 280 per year.

Question 2: Draw a graph for the following


Side of the square(in cm)233.556
Perimeter(in cm)812142024

Is it linear graph?


Side of the square(in cm)23456
Area(in cm2)49162536

Is it linear graph?


(i) Represent the “Side of square(in cm)” on x-axis and “Perimeter(in cm)” on y-axis. 

Yes, the graph is a linear graph.

(ii) Represent the “Side of square(in cm)” on x-axis and “Area(in cm2)” on y-axis.  

No, the graph is not a linear graph because the graph does not provide a straight line.

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