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If (y=(m-2)x-5) and (y=6x+(m-9)) have the same (y)-intercept, what is (m)?

Answer and explanation

Correct answer: 4

In the form \(y=mx+c\), the \(y\)-intercept is the constant term \(c\). The first line has \(y\)-intercept \(-5\), while the second has \(y\)-intercept \(m-9\). For equal intercepts, \(m-9=-5\), so \(m=4\). If \(m=5\), the second intercept would be \(-4\), not \(-5\). Exam tip: put \(x=0\) to find a \(y\)-intercept.

Related tags

Y-InterceptLinear EquationsParameterCoordinate GeometryAlgebraSlope And Y InterceptIntroduction To PolynomialsMathematics

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