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Which linear equation has a positive rate of growth?

Answer and explanation

Correct answer: \(y=7x-12\)

In the linear form \(y=mx+c\), \(m\) is the growth or decay rate. For \(y=7x-12\), \(m=7\) is positive, so \(y\) rises as \(x\) rises. Options A and D have negative rates. Exam tip: inspect the coefficient of \(x\).

Related tags

Linear EquationsGrowth RateDecay RateSlopePolynomialsClass 9 MathematicsLinear Growth And DecayIntroduction To Polynomials

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