Direct Inverse Proportion - Maths Formulas Class 8

Direct Inverse Proportion - Maths Formulas Class 8

Here i am providing Class 8th consolidates all important formulas that required in class 8th. these formula sheet will help students to solve questions easily and more in efficient way. you can also check our Video tutorial based on class-8th Short Notes.

• 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. Then x and y are said to vary directly. In such a case if Y₁, Y₂ are the values of Y corresponding to the values X₁, X₂ of X respectively Then

• 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. Then X and Y are said to vary inversely. In this case if Y₁, Y₂ are the values of Y corresponding to the values X₁,X₂ of X respectively then

X₁ .Y₁ = X₂.Y₂

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