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

Find m for infinitely many solutions of 7x + (m − 4)y = 13 and 14x + 6y = 26.

Answer and explanation

Correct answer: m = 7

A pair of linear equations has infinitely many solutions when the corresponding coefficients, including the constants, are proportional: a₁/a₂ = b₁/b₂ = c₁/c₂. For the given equations, 7/14 = 1/2 and 13/26 = 1/2. Therefore, the y-coefficient ratio must also be 1/2, so (m − 4)/6 = 1/2. Multiplying by 6 gives m − 4 = 3, and hence m = 7. With this value, the first equation becomes exactly one-half of the second, so both represent the same line and every point on that line is a common solution. Thus option B is correct. The other values destroy proportionality and cannot give infinitely many solutions.

Related tags

Linear EquationsInfinitely Many SolutionsProportional CoefficientsConditions For SolvabilityClass 10 MathematicsPair 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.