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If (y=52-kt) is linear decay and (k>0), what happens to (y) as (t) increases?

Answer and explanation

Correct answer: (y) will decrease

In (y=52-kt), the coefficient of (t) is (-k). Since (k>0), (-k) is negative. As (t) increases, (kt) increases, so a larger value is subtracted from 52; therefore, (y) decreases. (y) would remain constant only if (k=0). Exam tip: in a linear expression, a positive coefficient indicates increase, while a negative coefficient indicates decrease.

Related tags

Linear DecayLinear EquationsRate Of ChangePolynomialsMathematics Grade 9Linear Growth And DecayIntroduction To PolynomialsMathematics

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