Chapter 2: Introduction to Linear Polynomials
Chapter 2: Introduction to Linear Polynomials
Exercise
Question
Question: 2 (iii)
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6 / 12
A mobile phone is bought for ₹10,000. Its value decreases by ₹800 every year.
(iii) Find an expression that relates v and t, and explain why it represents linear decay.
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Answer
1
Recall the expression derived in the previous question for the mobile phone value v and time t.
Answer: $v = 10000 - 800t$
2
Explain why the expression represents linear decay.
Answer: The value decreases by a constant ₹800 every year. Therefore, the relationship between $v$ and $t$ represents linear decay.