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Maths CBSE Live product
Class 9 (2026-27)
Introduction to Linear Polynomials
Linear Patterns and Relationship
7.
Growth of trees
Question:
5
m.
A plant grows \(6\) cm every week. It is \(18\) cm tall at the start.
a)
Find its height after \(1, 2, 3\) weeks.
Weeks
Height (cm)
Week \(1\)
Week \(2\)
Week \(3\)
b)
Write a linear expression for height \(
h\)
in terms of number of weeks \(w\).
\(h = 18 + 6 w\)
\(h = 6 + 18 w\)
\(h = 6 - 18 w\)
\(h = 18 - 6 w\)
c)
What is the rate of change?
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