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

What will be the graphical solution type of (x+y=7) and (3x+3y=21)?

Answer and explanation

Correct answer: Infinitely many solutions

The direct answer is A: infinitely many solutions. Multiplying every part of x+y=7 by 3 gives 3x+3y=21, which is the second equation. Therefore the two equations represent one identical line. Any point on that line satisfies both equations, so there are infinitely many common ordered pairs, such as (0,7), (1,6), and (7,0). A is correct because coincident lines share every point. B is wrong because no solution occurs when distinct parallel lines never meet. C is wrong because one solution occurs when two different lines intersect once. D is wrong because two lines cannot have only two common points; distinct straight lines meet at most once, while identical lines have infinitely many common points. On a graph, the two drawings would completely overlap. A useful cue is to compare ratios of corresponding coefficients and constants: 3/1=3, 3/1=3, and 21/7=3, so the lines are coincident.

Related tags

Infinite SolutionsCoincident LinesGraphical Method

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.