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Class 10MathematicsPair of Linear Equations in Two VariablesConditions for solvabilityHardLevel 58
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What is the correct solution status for the equations (4x+7y=23) and (9x+15y=49)?

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Answer and explanation

Correct answer: One unique solution

Here (4/9 \ne 7/15), so the lines intersect at one point. If the first two ratios are different, one unique solution is obtained.

Related tags

Linear EquationsHardUnique Solution

Frequently asked questions

What is the correct answer to this question?

One unique solution

Why is this the correct answer?

Here (4/9 \ne 7/15), so the lines intersect at one point. If the first two ratios are different, one unique solution is obtained.

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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10 more MCQs
  1. 1If both lines appear exactly at the same place on the graph, how many solutions will there be?
  2. 2If (a₁/a₂ ≠ b₁/b₂), how will two lines appear on the graph?
  3. 3How many solutions are there for (2x + 5y = 20) and (4x + 10y = 40)?
  4. 4Which pair of equations will give a unique solution?
  5. 5If a₁ = 4, b₁ = 6, c₁ = 10 and a₂ = 2, b₂ = 3, c₂ = 5, how will the lines be related?
  6. 6If a₁ = 6, b₁ = 9, c₁ = 12 and a₂ = 2, b₂ = 3, c₂ = 4, how will the lines be?
  7. 7If a₁ = 7, b₁ = 14, c₁ = 21 and a₂ = 1, b₂ = 2, c₂ = 3, how will the lines be?
  8. 8If the line \(3x+ay=24\) coincides with the line \(3x+4y=24\), what is the value of \(a\)?
  9. 9If the line \(4x+ay=20\) is coincident with the line \(2x+3y=10\), what is the value of \(a\)?
  10. 10What type of lines are 9x − 6y = 21 and 3x − 2y = 7?
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