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Which equation represents a line with zero slope and a y-intercept of \(-4\)?

Answer and explanation

Correct answer: \(y=-4\)

In \(y=-4\), there is no \(x\)-term, so the line is horizontal and its slope is 0. It meets the y-axis at \(-4\). In contrast, \(x=-4\) is a vertical line with undefined slope. Exam tip: any equation of the form \(y=c\) represents a horizontal line.

Related tags

SlopeY-InterceptStraight LinesCoordinate GeometryLine EquationsSlope And Y InterceptIntroduction To PolynomialsMathematics

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