NCERT Solutions for Class 8 Maths Chapter 15 Exercise 15.3 Introduction to Graphs, has been designed by the NCERT to test the knowledge of the student on the topic Some Applications of Introduction to Graphs. Class 8 maths chapter 14 exercise 14.3 contains 5 questions and each question has explained stepwise. If you are class 8th student and currently preparing ex 14.3 then you must be looking for the maths class 8 chapter 14 exercise 14.3 solution for your exams preparation. Here we are providing complete solutions for class 8 maths exercise 14.3.
NCERT Solutions for Class 8 Maths Chapter 15 Exercise 15.3 Introduction to Graphs
Draw the graphs for the following tables of values, with suitable scales on the axes.
a) Cost of apples
Sol.: – By taking, ‘Number of Apple’ on X-Axis and ‘Cost (in ₹)’ on Y-Axis.
1 unit of x-axis = 1 Apple
1 unit of y-axis = Rs 5
b) Distance travelled by a car
Sol.: – By taking, Time (in Hours) on x-axis and Distances (in km) on y-axis.
1 unit of x-axis = 0.5 Hours
1 unit of y-axis = 40 km
i) How much distance did the car cover during the period 7.30 a.m. to 8 a.m?
Sol.: – Distance cover during the period 7.30 a.m. to 8 a.m
= Distance at 8 a.m. – Distance at 7.30 a.m.
= 120 km – 100 km
= 20 km
ii) What was the time when the car had covered a distance of 100 km since it’s start?
Sol.: – At 7.30 a.m. the car had covered a distance of 100 km since it’s start.
c) Interest on deposits for a year.
Sol.: – By taking, Deposit (in Rs) on x-axis and Simple interest (in Rs) on y-axis.
2 unit of x-axis = Rs 1000
1 unit of y-axis = Rs 50
i) Does the graph pass through the origin?
Sol.: – Yes, the graph passes through the origin.
ii) Use the graph to find the interest on Rs 2500 for a year.
Sol.: – The interest on Rs 2500 for a year will be Rs 200.
iii) To get an interest of Rs 280 per year, how much money should be deposited?
Sol.: – To get an interest of Rs 280 per year, we should deposit a sum of Rs 3500.
2. Draw a graph for the following.
i)Â
Is it a linear graph?
Sol.: – By taking, Side of square (in cm) on x-axis and Perimeter (in cm2) on y-axis.
1 unit of x-axis = 1 cm
1 unit of y-axis = 5 cm2
It is a linear graph.
ii)Â
Is it a linear graph?
Sol.: – By taking, Side of square (in cm) on x-axis and Area (in cm2) on y-axis.
1 unit of x-axis = 1 cm
1 unit of y-axis = 5 cm2
It is not a non-linear graph.
NCERT Solutions for Class 8 Maths Chapter 15
- Exercise 15.1 – Introduction to Graphs
- Exercise 15.2 – Introduction to Graphs
- Exercise 15.3 – Introduction to Graphs
The next Exercise for NCERT Solutions for Class 8 Maths Chapter 16 Exercise 16.1 Playing with Numbers can be accessed by clicking here
Download NCERT Solutions for Class 8 Maths Chapter 15 Exercise 15.3 Introduction to Graphs
