किस मान पर (5x+9y=45) और (10x+18y=k) की रेखाएं समांतर अलग-अलग होंगी?
For which value will (5x+9y=45) and (10x+18y=k) be distinct parallel lines?
Explanation opens after your attempt
Correct Answer
B. (k=88)
Concept
The coefficient ratio is \(\frac{1}{2}\), so coincidence needs (k=90). For (k=88), the lines are distinct and parallel.
Why this answer is correct
The correct answer is B. (k=88). The coefficient ratio is \(\frac{1}{2}\), so coincidence needs (k=90). For (k=88), the lines are distinct and parallel.
Exam Tip
गुणांक का अनुपात \(\frac{1}{2}\) है, इसलिए संपाती होने के लिए (k=90) चाहिए। (k=88) पर रेखाएं समांतर अलग-अलग हैं।
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