Questions
Which of the following pairs of linear equations has unique solution, no solution, or infinitely many solutions. In case there is a unique solution, find it by using cross multiplication method.
(i) x – 3y – 3 = 0 and 3x – 9y – 2 = 0
(ii) 2x + y = 5 and 3x + 2y = 8
(iii) 3x – 5y = 20 and 6x – 10y = 40
(iv) x – 3y – 7 = 0 and 3x – 3y – 15 = 0
detailed solution
Correct option is A
(i) x – 3y – 3 = 0 and 3x – 9y – 2 = 0
Since, the given set of lines are parallel to each other, they will not intersect each other. Hence, there is no solution for these equations.
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detailed solution
Correct answer is 1
(i) x – 3y – 3 = 0 and 3x – 9y – 2 = 0
Since, the given set of lines are parallel to each other, they will not intersect each other. Hence, there is no solution for these equations.
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