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CBSE Class 9 Answered

WHY IS CONSTANT OF PROPOTIONALITY NECESSARY ?
Asked by shankaranarayanan | 17 Oct, 2009, 03:51: PM
answered-by-expert Expert Answer

Dear student,

Given two variables x and y, y is (directly) proportional to x (

)

Then constant of proportionality is a constant k such that,

Note that without a constant k we can have potentially infinite relationships between y and x. So a constant k is a must to define a specific variation of x w.r.t. y.

 


Answered by | 17 Oct, 2009, 10:57: PM

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