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What is the (y)-intercept of (5y=15x-40)?

Answer and explanation

Correct answer: -8

First divide the equation by 5: \(y=3x-8\). In the form \(y=mx+c\), the constant term \(c\) is the \(y\)-intercept. Therefore, the \(y\)-intercept is \(-8\), and the line meets the \(y\)-axis at \((0,-8)\). Although \(-40\) is the constant term in the original equation, it is not the intercept until the equation is written in slope-intercept form. Exam tip: set \(x=0\) to find the \(y\)-intercept directly.

Related tags

Y-InterceptLinear EquationsSlope-Intercept FormCoordinate GeometryPolynomialsSlope And Y InterceptIntroduction To PolynomialsMathematics

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