Subjects
Maths CBSE Live product
Class 9 (2026-27)
Introduction to Linear Polynomials
PT1 Revision I - Introduction to Linear Polynomials

10. CBQ - Growth of plants

Question:

4 m.

Suppose a plant has height\(h\) of \(1.86 \text{feet}\) and it grows by \(0.5 \text{feet}\) each month.

(i) Find the height after \(4\) months.

3.86
1.86
4
None of the above

(ii) Find the height after \(7\) months.

5.36
1.86
4
None of the above

(iii) Find an expression that relates \(h\) and \(t\),

\(h = 0.5t +1.86\)
\(h = - 1.86 t +0.5\)
\(h = -0.5 t - 1.86\)
None of the above

(iv) Explain why it represents linear growth.

It represent linear growth because the plant grows at a fluctuating rate.
It represent linear growth because the plant grows at a non - constant rate.
It represent linear growth because the plant grows at a variable rate.
It represent linear growth because the plant grows at a constant rate.

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