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In linear decay (y=a-bx), when (b>0), what happens to (y) as (x) increases?

Answer and explanation

Correct answer: (y) decreases

In (y=a-bx), the coefficient of (x) is (-b). Since (b>0), the slope is negative. Therefore, as (x) increases, (bx) increases, so a larger amount is subtracted from (a) and (y) decreases. (y) can be 0 only for a particular value of (x), not always. Exam tip: In a linear equation, a negative coefficient of (x) means that (y) decreases as (x) increases.

Related tags

Linear DecayLinear EquationsNegative SlopePolynomialsVariable RelationshipLinear Growth And DecayIntroduction To PolynomialsMathematics

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