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If (c=-15) and (m-c=26) in (y=mx+c), what is the slope?

Answer and explanation

Correct answer: 11

Given \(c=-15\) and \(m-c=26\). Substituting \(c\) gives \(m-(-15)=26\), so \(m+15=26\). Hence, \(m=11\), and the slope is 11. For example, 10 is not correct because \(10-(-15)=25\), not 26. Exam tip: subtracting a negative number is the same as adding it.

Related tags

Linear EquationsSlopeY-InterceptAlgebraic SubstitutionCoordinate GeometrySlope And Y InterceptIntroduction To PolynomialsMathematics

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