## 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 15.3 |

Class | Class 8 |

Subject | Maths NCERT Solutions |

Board | CBSE |

TEXTBOOK | CBSE NCERT |

Category | NCERT Solutions |

**NCERT SOLVED**

**1. ****Draw the graphs for the following tables of values, with suitable scales on the axes.**

**(a) Cost of apples**

No. of apples | 1 | 2 | 3 | 4 | 5 |

Cost (in Rs.) | 5 | 10 | 15 | 20 | 25 |

**(b) Distance travelled by a car**

Time (in hours) | 6 a.m. | 7 a.m. | 8 a.m. | 9 a.m. |

Distance (in km) | 40 | 80 | 120 | 160 |

**(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 it’s start?**

**(c) Interest on deposits for a year.**

Deposit(inRs.) | 1000 | 2000 | 3000 | 4000 | 5000 |

Simple Interest (inRs.) | 80 | 160 | 240 | 320 | 400 |

**(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?**

**Ans.** **(a)**

**(b)** **(i)** The car covered 20 km distance.

**(ii) **It was 7.30 am, when it covered 100 km distance.

**(c)** **(i)** Yes, the graph passes through the origin.

**(ii)** Interest on Rs. 2500 is Rs. 200 for a year.

**(iii)** Rs. 3500 should be deposited for interest of Rs. 280.

**2. ****Draw a graph for the following.**

**(i)**

Side of Square(in cm) | 2 | 3 | 3.5 | 5 | 6 |

Perimeter
| 8 | 12 | 14 | 20 | 24 |

**Is it a linear graph?**

**(ii)**

Side of Square(in cm) | 2 | 3 | 4 | 5 | 6 |

Area (in cm^{2}) | 4 | 9 | 16 | 25 | 36 |

**Is it a linear graph?**

**Ans.** (i) Yes, it is a linear graph.

**(ii) No, it is not a linear graph because the graph does not provide a straight line.**