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Which option makes (y) increase by (11) per step and has (y(5)=82)?

Answer and explanation

Correct answer: \(y=27+11x\)

An increase of 11 per step requires a slope of 11, so the model must be \(y=a+11x\). Using \(y(5)=82\) gives \(a+11(5)=82\), hence \(a=27\). Therefore, \(y=27+11x\) is correct. Option C represents a decrease of 11 because its slope is \(-11\). Exam tip: Substitute the given \(x\)-value into each option to check the condition quickly.

Related tags

Linear EquationsLinear GrowthSlopePolynomial IntroductionFunction EvaluationLinear Growth And DecayIntroduction To PolynomialsMathematics

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