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Which of the following situations represents linear decay?

Answer and explanation

Correct answer: The quantity decreases by an equal amount in each equal time interval.

In linear decay, the quantity falls by the same amount in equal time intervals, so its slope is negative. A fixed percentage decrease is exponential decay, not linear. Exam tip: in \(Y(t)=mt+c\), \(m<0\) indicates decay.

Related tags

Linear Growth And DecayLinear PolynomialNegative SlopeRate Of ChangeClass 9 MathematicsIntroduction To PolynomialsMathematicsClass 9 Mcq

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