What will be the graph of (2x+4y=10) and (x+2y=7)?
Answer and explanation
Correct answer: Distinct parallel lines
Multiplying the second equation by 2 gives 2x+4y=14, whereas the first equation is 2x+4y=10. Thus, the ratios of the coefficients of x and y are equal, but the ratio of the constant terms is different. Therefore, the two lines are distinct and parallel. Option A is incorrect because coincident lines require all three corresponding ratios to be equal. Exam tip: if a₁/a₂ = b₁/b₂ ≠ c₁/c₂, the lines are parallel and distinct.
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What is the correct answer to this question?
Distinct parallel lines
Why is this the correct answer?
Multiplying the second equation by 2 gives 2x+4y=14, whereas the first equation is 2x+4y=10. Thus, the ratios of the coefficients of x and y are equal, but the ratio of the constant terms is different. Therefore, the two lines are distinct and parallel. Option A is incorrect because coincident lines require all three corresponding ratios to be equal. Exam tip: if a₁/a₂ = b₁/b₂ ≠ c₁/c₂, the lines are parallel and distinct.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Pair of Linear Equations in Two Variables. Topic: Conditions for solvability.
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