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 (rx+5y=2) and (8x+10y=4) have a unique solution?

Answer and explanation

Correct answer: \(r\neq 4\)

A pair of linear equations has a unique solution when \(\frac{a_1}{a_2}\neq\frac{b_1}{b_2}\). Here, \(\frac{r}{8}\neq\frac{5}{10}=\frac12\), which gives \(r\neq4\). If \(r=4\), the two equations become proportional and have infinitely many solutions, not a unique solution. Exam tip: compare the ratios of the coefficients of \(x\) and \(y\) first.

Related tags

Class 10Linear EquationsUnique SolutionConditions For SolvabilityCoefficient RatiosPair 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.