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If (y=(6a-5)x+(a+4)) has (y)-intercept (13), what is the slope?

Answer and explanation

Correct answer: 49

In the form \(y=mx+c\), the y-intercept is the constant term \(c\). Here, \(a+4=13\), so \(a=9\). Therefore, the slope is \(m=6a-5=6(9)-5=49\). Choosing 50 would result from incorrectly handling the subtraction of 5. Exam tip: first find the parameter using the y-intercept, then substitute it into the coefficient of \(x\).

Related tags

Linear EquationsSlopeY-InterceptParameter SubstitutionCoordinate GeometrySlope And Y InterceptIntroduction To PolynomialsMathematics

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