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In the rule (y=60-5x), what does (5) represent?

Answer and explanation

Correct answer: Amount of decrease for each increase of 1 in x

In the rule y=60-5x, 60 is the initial value. The coefficient of x is -5, so when x increases by 1, the value of y decreases by 5. Therefore, 5 represents the amount of decrease, not the initial value. Exam tip: In a linear rule y=a+bx, b gives the rate of change; a negative b indicates decay.

Related tags

Linear DecayRate Of ChangeLinear EquationsPolynomialsLinear Growth And DecayIntroduction To PolynomialsMathematicsClass 9 Mcq

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