Linear Growth and Decay | Introduction to Linear Polynomials | Grade 9 | NCERT | Khan Academy @KhanAcademyIndiaEnglish
Linear Growth and Decay | Introduction to Linear Polynomials | Grade 9 | NCERT | Khan Academy  @KhanAcademyIndiaEnglish
Uploaded July 2026 | Updated September 2026, 2 weeks ago
In this video, we connect mathematics to real life by starting with a practical situation that can be modeled using a linear function. From there, we explain the concept of linear growth, showing how values increase steadily over time. The lesson then shifts to linear decay, illustrating how values decrease at a constant rate and how this too can be captured through a linear function.

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khanacademy.org/math/ncert-math-class-9-new/x56891bfac37feca0:introduction-to-linear-polynomials

Timestamps:
00:00 Modelling real life situations
00:32 Understanding linear growth
03:19 Understanding linear decay

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Linear Growth and Decay | Introduction to Linear Polynomials | Grade 9 | NCERT | Khan Academy

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