Question

If the system of eqns 6x+2y=3 and kx+y=2 has a unique soln find k

Answer 1

sol. 6x+2y=3;kx+y=2

⇒a1=6 ,  b1=2 , c3

⇒a2=k ,b2=1 , c2=2

⇒ a1/a2=b1/b2

⇒6/k=2/1

⇒6/k=2

⇒6/2=k

k=3  Ans

i hope this is right answer.