यदि दो रेखाएं (2x+ay=10) और (6x+9y=30) संपाती हों, तो (a) का मान क्या है?
If the lines (2x+ay=10) and (6x+9y=30) are coincident, what is the value of (a)?
Explanation opens after your attempt
C. (3)
Concept
For coincident lines, \(\frac{2}{6}=\frac{a}{9}=\frac{10}{30}\), so (a=3). All coefficients must be in the same ratio.
Why this answer is correct
The correct answer is C. (3). For coincident lines, \(\frac{2}{6}=\frac{a}{9}=\frac{10}{30}\), so (a=3). All coefficients must be in the same ratio.
Exam Tip
संपाती के लिए \(\frac{2}{6}=\frac{a}{9}=\frac{10}{30}\), इसलिए (a=3)। सभी गुणांक समान अनुपात में होने चाहिए।
Login to save your score, XP, coins and progress.
