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Maths CBSE Live product
Class 9 (2026-27)
Introduction to Linear Polynomials
Linear Patterns and Relationship
8.
Canteen lunch
Question:
3
m.
A canteen charges ₹\(23\) per lunch plus a one-time membership fee of ₹\(136\).
a)
Write an equation for total cost \(C\) in terms of number of lunches \(x\).
\(C = 23x + 136\)
\(C = 136x + 23\)
\(C = 23x - 136\)
\(C = 136x - 23\)
b)
What is the rate of change and the constant base fee.
\(m = 23, b = -136\)
\(m = -23, b = -136\)
\(m = -23, b = 136\)
\(m = 23, b = 136\)
c)
Discuss the pattern.
quadratic pattern
linear pattern
exponential pattern
geometrical pattern
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