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 .
(a) 3
(b) -3
(c) - 12
(d) 4​

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.