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What is the value of (y) at (x=0) in the line (y=-x+8)?

Answer and explanation

Correct answer: \(8\)

Substituting \(x=0\) in \(y=-x+8\) gives \(y=-(0)+8=8\). Hence, \(8\) is correct; it is also the \(y\)-intercept of the line. \(-1\) is the coefficient of \(x\), not the value of \(y\) when \(x=0\). Exam tip: To find the \(y\)-intercept, always put \(x=0\).

Related tags

Linear EquationsY-InterceptSubstitutionCoordinate GeometryPolynomials IntroductionSlope And Y InterceptIntroduction To PolynomialsMathematics

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