Class 8

Direct and Inverse Proportions question bank (Mathematics)

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Q1.

Consider the mathematical concept of 'Concept of Direct Variation (x/y = k)' in the chapter 'Direct and Inverse Proportions'. Which property holds true?

(A)

Standard algebraic/arithmetic axioms and identity theorems apply rigorously to Concept of Direct Variation (x/y = k)

(B)

Equations cannot be verified by substitution

(C)

Commutative property never holds for addition

(D)

Negative numbers have no real meaning in algebra

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Q2.

In advanced problem-solving involving 'Concept of Direct Variation (x/y = k)', which problem-solving approach is recommended by NCERT?

(A)

Relying on arbitrary estimation without proof

(B)

Skipping algebraic simplification

(C)

Formulating equations, simplifying step-by-step, and checking dimensional consistency for Concept of Direct Variation (x/y = k)

(D)

Omitting units from the final answer

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