Question

Find out the value of c for which the pair of equations cx – y = 2 and 6x – 2y =4 will have infinitely many solutions. अगर दिए गए रेखीय समीकरणों के युग्म cx – y = 2 और 6x – 2y = 4 के अनंत अनेक हल हो तो c का मूल्य पता करें।*

(A) 3

(B) – 3

(C) –12

(D) 4

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Answer 1

Answer:

(A) 3

Step-by-step explanation:

The given Equations are:

  $cx-y=2$  ...........(i)

 $6x-2y=4$  ...........(ii)

Divide the equation (ii) by 2.

     $\frac{6x}{2} -\frac{2y}{2} =\frac{4}{2}$

Or, $3x-y=2$  ...........(iii)

Now, Look carefully at equation (i) and equation (iii)...

Both equations are the same.

So,

  We can say,

       $c=3$    (Ans)

Well,

   In the question Option (A) is the correct answer.

Hope you have understood the process...        

(IF you find the answer helpful, please make my answer as Brainliest.)

By- Md. Mominur Islam Mahim.