## NCERT Solutions for Class 8 Chapter 15 Introduction to Graphs -Free PDF Download

Free PDF download of NCERT Solutions Maths Class 8 Solutions Chapter 15 – Introduction to Graphs solved by Expert Maths Teachers on CoolGyan.Org. All Chapter 15 – Introduction to Graphs Questions with Solutions for NCERT to help you to revise complete Syllabus and Score More marks.

Maths Revision Notes for Class 8

Chapter Name | Introduction to Graphs |

Chapter | Chapter 15 |

Exercise | Exercise 15.2 |

Class | Class 8 |

Subject | Maths NCERT Solutions |

Board | CBSE |

TEXTBOOK | CBSE NCERT |

Category | NCERT Solutions |

**NCERT SOLVED**

**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)**

**Ans. **

**(a)** All points A, B, C and D lie on a vertical line.

**(b)** P, Q, R and S points also make a line. It verifies that these points lie on a line.

**(c)** These points do not lie in a straight line.

**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.**

**Ans.**

The coordinates of the points at which this line meets the axis at (5, 0) and axis at (0, 5).

**3. Write the coordinates of the vertices of each of these adjoining figures.**

**Ans.** Vertices of figure OABC

O (0, 0), A (2, 0), B (2, 3) and C (0, 3)

Vertices of figure PQRS

P (4, 3), Q (6, 1), R (6, 5) and S (4, 7)

Vertices of figure LMK

L (7, 7), M (10, 8) and K (10, 5)

**4. ****State whether True or False. Correct that are 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 y-axis.**

**(iii) The coordinates of the origin are (0, 0).**

**Ans.** **(i)** True **(ii)** False, it will lie on axis. **(iii)** True