Ex. 2.4 Linear Polynomials | Ch-2 Class 9 Maths Ganita Manjari | Sanyam Bhayana

Master Ex. 2.4 of Class 9 Maths Ganita Manjari Chapter 2 — Linear Growth and Decay — with complete solutions to all word problems on plant height, phone depreciation, village population, and telecom balance. New NCERT 2026-27 syllabus. 📌 TELEGRAM (NOTES): https://t.me/+cbiN5dwvTSNkZTg1 📲 INSTAGRAM:   / sanyambhayanaclass9and10   ___________________________________________ ✅ WHAT YOU'LL LEARN IN THIS LECTURE: Question 1 — Plant height: linear growth, table of values (t = 0 to 10), and expression h = 1.75 + 0.5t Question 2 — Mobile phone depreciation: linear decay, table (t = 0 to 8 years), and expression v = 10000 − 800t Question 3 — Village population growth: finding population after 6 years, table (t = 0 to 10), expression p = 750 + 50t Question 4 — Telecom recharge balance: equation b(x) = 600 − 15x, finding when balance runs out (40 days), table (x = 1 to 10) Understanding linear growth vs linear decay using constant rate of change How to identify and explain linear expressions from real-life word problems ___________________________________________ 📚 This lecture is useful for Class 9 students of CBSE, ICSE, UP Board, Bihar Board, MP Board, Haryana Board, Punjab Board, and all other state boards following the Ganita Manjari / NCERT syllabus for Session 2026-27. ___________________________________________ 👨‍🏫 ABOUT THE TEACHER: Sanyam Bhayana is a Class 12 State Topper (99.8%) and Gold Medalist from Shri Ram College of Commerce (SRCC), New Delhi. He has helped hundreds of students score 100/100 in board exams. ___________________________________________ ⏱ CHAPTERS: 0:00 Introduction 0:44 Question 1 Ex. 2.4 — Plant Height (Linear Growth) 3:29 Question 2 Ex. 2.4 — Mobile Phone Depreciation (Linear Decay) 13:51 Question 3 Ex. 2.4 — Village Population 17:56 Question 4 Ex. 2.4 — Telecom Recharge Balance ___________________________________________ 💬 Got a doubt? Drop it in the comments — Sanyam Sir answers personally. ___________________________________________ 📂 CLASS 9 MATHS COMPLETE NCERT PLAYLIST: Class 9 Maths Ganita Manjari:    • CLASS 10 MATHS FULL COURSE (2026-2027)   ___________________________________________ Ex. 2.4 Ganita Manjari Class 9 Maths covers linear growth and decay through real-world word problems — ideal for CBSE, UP Board, Haryana Board, and all state boards using the new NCERT 2026-27 textbook. Students preparing for Class 9 Maths Chapter 2 Introduction to Linear Polynomials will find this explanation clear, step-by-step, and exam-ready.