You can Download KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.2 Questions and Answers helps you to revise the complete syllabus.
KSEEB Solutions for Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.2
Question 1.
Plot the following points on a graph sheet. Verify if they lie on a line.
(a) A(4, 0), B(4, 2), C(4, 6), D(4, 2.5)
(b) P(1, 1), Q(2, 2), R(3, 3), S(4, 4)
(c) K(2, 3), L(5, 3), M(5, 5), N(2, 5)
Solution:
(a)
(b)
Yes, the points P, Q, R, S lies on a line.
(c)
Points K, L, M, N do not lie on a line.
Question 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:
Coordinates of the point at which line meets the line x-axis and y-axis are (5, 0) and (0, 5).
Question 3.
Write the coordinates of the vertices of each of these adjoining figures.
Solution:
(i) Coordinat of rectangle OABC are A(2, 0), B(2, 3), C(0, 3) and 0(0, 0).
(ii) Coordinates of vertices of parallelogram PQRS are P(4, 3), Q(6, 1), R(6, 5), and S(4, 7).
(iii) Coordinates of vertices of ∆LMK are L(7, 7), M(10, 8), and K(10, 5).
Question 4.
State whether True or False. Correct that is false.
(i) A point whose x-coordinate is zero and y-coordinate is non-zero will lie on the y-axis.
(ii) A point whose y-coordinate is zero and x-coordinate is 5 will lie on the y-axis.
(iii) The coordinates of the origin are (0, 0).
Solution:
(i) True
(ii) False. It will lie on the x-axis.
(iii) True.