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Introduction of Graphs

Introduction of Graphs

Chapter 14: Navodaya Class 9 Mathematics Introduction of Graphs

Have you ever looked at a chart and understood a lot of information in just a few seconds? That is the power of a graph! Graphs help us show numbers, compare data, and understand changes in a simple way. Navodaya Class 9 Mathematics Introduction of Graphs helps students learn how to read and draw graphs with ease.

In this chapter, students learn about points, coordinates, axes, and simple graphs. Moreover, these skills are useful for solving many questions in the JNVST exam. Therefore, students should practise graphs step by step. Therefore, for a better understanding, students can join the best online classes for Navodaya Vidyalaya  Class 9 at Veda Academy. We provide the best study material that is aligned with the updated JNV syllabus. JNVST Mock Tests, Model Papers, Notes, PYQs, and Important Questions.

What is a Graph?

A graph is a simple way to show information using points, lines, or shapes. It helps us understand data quickly. For example, a graph can show the marks scored by students in different subjects. 

In Navodaya Class 9 Mathematics Introduction of Graphs, students learn how numbers can be shown on a graph. First, they learn about the horizontal and vertical axes. Next, they learn how to mark points. Finally, they learn how to read information from a graph.

Introduction of Graphs PDF

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Important Terms in JNVST Class 9: Introduction of Graphs

  1. Tally Marks: Represent the frequency of the data “|”.

  2. Frequency: It represents the number of times a data value occurs.

  3. Class Mark: It is the middle value of the class interval. 

  4. Class Width: The difference between the upper class limit and the lower class limit of a class is called the width of the class.

  5. Range: The difference between the maximum value and the minimum value of the data.

  6. Upper Class Limit: The upper value of a class interval is called the upper class limit.

Important Parts of a Graph

A graph has some basic parts. Understanding them makes graph questions much easier.


1. X-Axis: The horizontal line is called the x-axis. It usually shows the first value in an ordered pair.

2. Y-Axis: The vertical line is called the y-axis. It usually shows the second value in an ordered pair.

3. Origin: The point where the x-axis and y-axis meet is called the origin. It is written as (0, 0).

4. Coordinates: Coordinates tell us the exact position of a point. They are written as an ordered pair, such as (3, 4).


In Navodaya Class 9 Mathematics  Introduction of Graphs, students should remember that the first number shows the x-coordinate. The second number shows the y-coordinate. 


Also Check: Navodaya Class 9 Admission Form 2027 Step-by-Step Process

Why Are Graphs Important?

Graphs make mathematical information easy to understand. They also help students compare values and find patterns. For example, a graph can help you:


  • Compare two sets of numbers.

  • Find the position of a point.

  • Understand changes in data.

  • Read information quickly.

  • Solve mathematical problems with confidence.


Thus, JNVST Class 9  Introduction of Graphs is an important topic for students preparing for the entrance examination.

Key Points to Remember in JNVST Class 9 Maths Graphs

While studying JNVST Class 9 Maths Graphs, students should keep these points in mind. These simple points can help students avoid common mistakes:


  1. The x-axis is horizontal.

  2. The y-axis is vertical.

  3. The origin is (0, 0).

  4. Coordinates are written as (x, y).

  5. The first number represents the x-coordinate.

  6. The second number represents the y-coordinate.

  7. Always check the scale before plotting a point.

  8. Keep the graph neat and clear.

Why Veda Academy is the best coaching for Navodaya Class 9

Veda Academy JNVST Class 9 preparation gives students a structured way to prepare for the JNVST Class 9 entrance exam. Students can access study materials, chapter-wise learning resources, practice questions, revision content, and mock tests. The content is prepared according to the JNV Syllabus. Therefore, students can study important topics in an organised way.


Veda Academy aims to provide the best coaching for Navodaya Class 9 exam preparation through simple lessons and useful study resources. It also supports students who prefer flexible learning from home. For students looking for the best online classes for JNV Class 9 exam preparation, Veda Academy offers online learning support with useful resources for regular practice and revision


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