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For the line x - y = 8, which point is obtained when y = 3?

Answer and explanation

Correct answer: (11, 3)

The governing concept is obtaining a coordinate pair from a linear equation by substitution. The equation is x − y = 8 and y is given as 3. Substitute y = 3: x − 3 = 8. Adding 3 to both sides gives x = 11. Since an ordered pair is written as (x,y), the required point is (11,3), so option B is correct. Option A reverses the coordinates. Option C copies the constant 8 as x without solving. Option D results from the incorrect operation 8 − 3; when isolating x in x − 3 = 8, 3 must be added. Verification is immediate: 11 − 3 = 8.

Related tags

SubstitutionOrdered PairsGraph PlottingLinear EquationsGraphical Method Of Finding Solutions.Graphical Method Of Finding SolutionsPair Of Linear Equations In Two VariablesMathematics

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