यदि (ax+6y=18) और (2x+3y=9) संपाती रेखाएं हैं, तो (a) का मान क्या है?
If (ax+6y=18) and (2x+3y=9) are coincident lines, what is the value of (a)?
Explanation opens after your attempt
C. (4)
Concept
The first equation must be (2) times the second, so (a=4). In coincident lines, all terms change by the same multiplier.
Why this answer is correct
The correct answer is C. (4). The first equation must be (2) times the second, so (a=4). In coincident lines, all terms change by the same multiplier.
Exam Tip
पहला समीकरण दूसरे का (2) गुना होना चाहिए, इसलिए (a=4)। संपाती रेखाओं में सभी पद समान गुणक से बदलते हैं।
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