Class 8 Maths Notes for Direct and Inverse Proportions (PDF) – Study Material

Class 8 Maths Direct and Inverse Proportions – Get here the Notes, Question & Practice Paper of Class 8 Maths for topic Direct and Inverse Proportions Notes. Direct and Inverse Proportions Notes for Class 8 Maths are here. You can download the Direct and Inverse Proportions Notes PDF to study all the topics in this chapter. Moreover the Class 8 Maths notes include chapter summary, definitions, examples, and key pointers for Direct and Inverse Proportions. Thus if you are studying class Maths (गणित), then the Direct and Inverse Proportions notes will help you easily understand the topic and ace it.

Class 8 Maths Notes for Direct and Inverse Proportions

Direct and Inverse Proportions is a critical part in the study of Maths. In India, it is taught in class. Therefore the Class 8 Notes for Maths topic Direct and Inverse Proportions have been compiled by teachers and field experts. They explain the complete chapter of Direct and Inverse Proportions in one-shot.

Direct and Inverse Proportions Notes Download Link – Click Here to Download PDF

Direct and Inverse Proportions Notes for Class 8 Maths

Direct and Inverse Proportions Class 8 notes is as follows. You can view the document here and also download it use it anytime for future reference whenever you want to brush up your concepts of Maths.

Chapter 10 – Direct and Inverse Proportions

1.DIRECT PROPORTION:- Two quantities x and y are said to be in direct proportion if they increase (decrease) together in such a manner that the ratio of their corresponding values remains constant.

That is, x/y= k, where k is a positive number, if x and y are in direct proportion or vary directly. In case of direct proportion, if y₁ and y₂ are the values of y corresponding to the values x₁ and x₂ of x respectively, then x₁/y₁ = x₂/y₂.

Real-life examples of direct proportion are:

• The weight of a person can be related to the clothing size that they might use.
• The number of construction workers that are working can be related to how much time it takes to finish a project.
• The number of bananas can be related to the number of boxes needed to store them.

2. Inverse proportion

Two quantities x and y are said to be in inverse proportion if an increase in x causes a proportional decrease in y and vice-versa, in such a manner that the product of their corresponding values remains constant. That is, xy = k where k is a positive number, if x and y are in inverse proportion. In this case, if y₁, y₂ are the
values of y corresponding to the values x₁, x₂ of x respectively, then x₁ y₁= x₂y₂ Or x₁ x₂ = y₁ y₂.

Real-life examples of inverse proportion are:

• As the speed of the car increases the time taken to cover a certain distance decreases.
• More people in the room means less space in the room.
• The number of people doing something and the time it takes to do it. As the number of people increases, the time it takes to finish decreases.

Candidates who are ambitious to qualify the Class 8 with good score can check this article for Notes, Study Material, Practice Paper. Above we provided the link to access the Notes, Important Question and Practice Paper of Class 8 Maths for topic Direct and Inverse Proportions.

All Topics Class 8 Maths Notes

Chapter wise notes for Maths (गणित) are given below.

• Rational Numbers
• Linear Equation in One Variable
• Understanding Quadrangles
• Data Handling
• Square and Square Roots
• Comparing Quantities
• Algebraic Expression and Identities
• Mensuration
• Exponents and Powers
• Direct and Inverse Proportions
• Factorisation
• Introduction to Graphs

Class 8 Notes for All Subjects

• Class 8 Maths Notes
• Class 8 Hindi Study Material (Important Questions)

NCERT Solutions for Class 8 Maths Direct and Inverse Proportions

The Direct and Inverse Proportions notes here help you solve the questions and answers. Also, you can complete the Class 8 Direct and Inverse Proportions worksheet using the same. In addition you will also tackle CBSE Class 8 Maths Important Questions with these Class 8 notes.

However if you still need help, then you can use the NCERT Solutions for Class 8 Maths Direct and Inverse Proportions to get all the answers. Direct and Inverse Proportions solutions contain questions, answers, and steps to solve all questions.

Notes for All Classes

• Class 6 Notes
• Class 7 Notes
• Class 8 Notes
• Class 9 Notes
• Class 10 Notes
• Class 11 Notes
• Class 12 Notes

Direct and Inverse Proportions Notes for Class 8 Maths – An Overview

Class 8 Direct and Inverse Proportions Notes for All Boards

You can use the Class 8 Maths notes of Direct and Inverse Proportions for all boards.

The education boards in India for which Direct and Inverse Proportions notes are relevant are – CBSE, CISCE, AHSEC, CHSE Odisha, CGBSE, HBSE, HPBOSE, PUE Karnataka, MSBSHSE, PSEB, RBSE, TBSE, UPMSP, UBSE, BIEAP, BSEB, GBSHSE, GSEB, JAC, JKBOSE, KBPE, MBOSE, MBSE, MPBSE, NBSE, DGE TN, TSBIE, COHSEM, WBCHSE.

Therefore you can refer to these notes as CBSE, CISCE, AHSEC, CHSE Odisha, CGBSE, HBSE, HPBOSE, PUE Karnataka, MSBSHSE, PSEB, RBSE, TBSE, UPMSP, UBSE, BIEAP, BSEB, GBSHSE, GSEB, JAC, JKBOSE, KBPE, MBOSE, MBSE, MPBSE, NBSE, DGE TN, TSBIE, COHSEM, WBCHSE notes for class Class 8 / Class / Maths for the topic Direct and Inverse Proportions.