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Which point does not lie on the line 2x + 7y = 14?

Answer and explanation

Correct answer: (1, 2)

The governing method is point verification: a point lies on a line exactly when substituting its coordinates makes the equation true. For (7, 0), 2(7) + 7(0) = 14, so it lies on the line. For (0, 2), the value is 0 + 14 = 14, so it also lies on the line. For (7/2, 1), the value is 2(7/2) + 7(1) = 7 + 7 = 14, so this point lies on the line as well. For (1, 2), the value is 2(1) + 7(2) = 2 + 14 = 16, not 14. Therefore option D is the only point that does not lie on the line. The conclusion follows from exact substitution rather than visual estimation.

Related tags

Point VerificationLinear EquationGraphical MethodSubstitutionGraphical Method Of Finding Solutions.Graphical Method Of Finding SolutionsPair Of Linear Equations In Two VariablesMathematics

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