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What will be shown in the graph of the equations (20x+15y=85) and (4x+3y=17)?

Answer and explanation

Correct answer: Same line

Every term of the first equation is 5 times the corresponding term of the second: 20=5×4, 15=5×3, and 85=5×17. Hence, both equations represent the same line and have infinitely many common solutions. Option B is incorrect because distinct parallel lines require the coefficient ratios to be equal but different from the constant-term ratio. Exam tip: if a₁/a₂ = b₁/b₂ = c₁/c₂, the two lines are coincident.

Related tags

Pair Of Linear EquationsSolvability ConditionsGraphical RepresentationCoincident LinesClass 10 MathematicsConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematics

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