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Which of the following equations has a graph that falls from left to right and intersects the y-axis 4 units below the origin?

Answer and explanation

Correct answer: \(y=-2x-4\)

In \(y=mx+c\), \(m\) is the slope and \(c\) is the y-intercept. A falling line needs \(m<0\), and an intercept 4 units below the origin means \(c=-4\); hence A is correct. Option B has the correct intercept but a positive slope. Exam tip: use the sign of \(m\) to identify the direction quickly.

Related tags

Linear EquationsSlopeY-InterceptCoordinate GeometryGraph InterpretationMathematicsSlope And Y InterceptIntroduction To Polynomials

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