PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2

Punjab State Board PSEB 8th Class Maths Book Solutions Chapter 15 Introduction to Graphs Ex 15.2 Textbook Exercise Questions and Answers.

PSEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.2

1. Plot the following points on a graph sheet. Verify if they lie on a line:

Question (a)
A(4, 0), B (4, 2), C(4, 6), D(4, 2.5)
Solution:
PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2 1
Plotting the given points and then l joining them we find that they all S lie on the same line.

PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2

Question (b)
P(1, 1), Q(2, 2), R(3, 3), S(4, 4)
Solution:
PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2 2
Plotting the given points and then joining them we find that they all lie on the same line.

Question (c)
K(2, 3), L(5, 3), M(5, 5), N(2, 5)
Solution:
PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2 3
Plotting the given points and then joining them we find that all of them do not lie on the same line.

PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2

2. Draw the line passing through (2, 3) and (3, 2). Find the coordinates of the points at which this line meets the x-axis and y-axis.
Solution:
PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2 4
Plot the given points and join them to make a line. When you extend this line, it meets the X-axis at C (5, 0) and the Y-axis at D (0, 5).

3. Write the coordinates of the vertices of each of these adjoining figures:
PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2 6
Solution:
Figure:
(i) The coordinates of the vertices of quadrilateral OABC:
O are (0, 0)
A are (2, 0)
B are (2, 3)
C are (0, 3)

(ii) The coordinates of the vertices of quadrilateral PQRS:
P are (4, 3)
Q are (6, 1)
R are (6, 5)
S are (4, 7)

(iii) The coordinates of the vertices of triangle KLM:
K are (10, 5)
L are (7, 7)
M are (10, 8)

PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2

4. State whether True or False. Correct that are false:
PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2 5

Question (i)
A point whose x-coordinate is zero and y- coordinate is non-zero will lie on y-axis.
Solution:
True

Question (ii)
A point whose y-coordinate is zero and x-coordinate is 5 will lie on y- axis.
Solution:
False
Correct statement: A point whose y-coordinate is 0 and x-coordinate is 5 will lie on X-axis at a distance 5 units from origin.

PSEB 8th Class Maths Solutions Chapter 15 Introduction to Graphs Ex 15.2

Question (iii)
The coordinates of the origin are (0, 0).
Solution:
True

Leave a Comment