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In the rule (y=85-10x), what does (10) represent?

Answer and explanation

Correct answer: Decrease of 10 per step

In
(y=85-10x), the coefficient is
(-10). This means that when
(x) increases by 1, the value of
(y) decreases by 10. Hence, 10 represents the decrease per step. The initial value is 85 because
(y=85) when
(x=0). Exam tip: In a linear rule
(y=a+bx),
(b) gives the rate of change; a negative
(b) indicates a decrease.

Related tags

Linear EquationsRate Of ChangeLinear DecayCoefficient MeaningPolynomialsLinear Growth And DecayIntroduction To PolynomialsMathematics

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