समीकरण (x+7y=13) और (2x+9y=20) के लिए सही कथन चुनिए।
Choose the correct statement for (x+7y=13) and (2x+9y=20).
Explanation opens after your attempt
D. एक अद्वितीय हल हैThere is one unique solution
Concept
Here \(1/2 \ne 7/9\) so the lines intersect at one point. Different coefficient ratios give one unique solution.
Why this answer is correct
The correct answer is D. एक अद्वितीय हल है / There is one unique solution. Here \(1/2 \ne 7/9\) so the lines intersect at one point. Different coefficient ratios give one unique solution.
Exam Tip
यहां \(1/2 \ne 7/9\) इसलिए रेखाएं एक बिंदु पर कटती हैं। अलग गुणांक अनुपात एक अद्वितीय हल देते हैं।
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