KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3

You can Download KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Questions and Answers helps you to revise the complete syllabus.

KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3

Question 1.
Draw the graphs for the following tables of values, with suitable scales on the axes.
(a) Cost of apples
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Q1
(b) Distance travelled by car
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Q1.1
(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 its start?
(c) Interest on deposits for a year.
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Q1.2
(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?
Solution:
(a)
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Q1.3
(x-axis) Horizontal 1 unit = Rs. 5
(y-axis) Vertical 1 unit = 1 apple
(b)
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Q1.4
(i) At 7 o’clock distance is 80 km and at 7.30 am distance covered is 100 km. 8 o’ clock car covers distance 120 km. So between 7:30 a.m to 8:00 o’ clock distance covered = 120 – 100 = 20 km.
(ii) It was 7:30 a.m.
(c)
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Q1.5
(i) Yes, graph passes through the origin.
(ii) Interest in Rs 2500 is Rs. 200.
(iii) To get interested of Rs 280 per year one has to deposit Rs 3500.

KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3

Question 2.
Draw a graph for the following.
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Q2
Is it a linear graph?
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Q2.1
Is it a linear graph?
Solution:
(i)
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Q2.2
Yes, it is a linear graph.
(ii)
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.3 Q2.3
No, it is not a linear graph.