Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

When will (α - 1)x + 5y = 2 and 8x + 10y = 6 have a unique solution?

Answer and explanation

Correct answer: α ≠ 5

For two linear equations, a unique solution exists when the ratios of the x-coefficients and y-coefficients are unequal: a₁/a₂ ≠ b₁/b₂. Here the condition is (α − 1)/8 ≠ 5/10. Since 5/10 = 1/2, equality would occur when (α − 1)/8 = 1/2, so α − 1 = 4 and α = 5. At that exceptional value, the coefficient ratios are equal, but the constant ratio 2/6 = 1/3 is different; hence the lines would be parallel and there would be no solution. For every α other than 5, the coefficient ratios differ and the lines intersect once. Therefore option B is correct.

Related tags

Class10Linear-EquationsUnique-SolutionParameter-ConditionConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.