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What is the (y)-coordinate of the intersection of (7x+2y=31) and (3x-y=10)?

Answer and explanation

Correct answer: (1)

From the second equation, (y=3x-10). Substitution gives (7x+2(3x-10)=31), so (x=\frac{51}{13}) and (y=\frac{23}{13}); none of the listed integer options are correct. Matching calculation with options is necessary.

Related tags

Graphical SolutionY-CoordinateOption AuditExpertGraphical Method Of Finding Solutions.Graphical Method Of Finding SolutionsPair Of Linear Equations In Two VariablesMathematics

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