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In the equation of a line \(y=mx+c\), which condition shows that the line is parallel to the \(x\)-axis?

Answer and explanation

Correct answer: \(m=0\)

In \(y=mx+c\), \(m\) represents the slope. A line parallel to the \(x\)-axis is horizontal, so its slope is \(0\). The condition \(c=0\) only means that the line passes through the origin. Exam tip: for a line parallel to the \(x\)-axis, always use \(m=0\).

Related tags

Linear EquationsSlopeY-InterceptCoordinate GeometryClass 9 MathematicsSlope And Y InterceptIntroduction To PolynomialsMathematics

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