Question:
Find the value of k for which each of the following system of equations have no solution :
$2 x-k y+3=0$
$3 x+2 y-1=0$
Solution:
GIVEN:
$2 x-k y+3=0$
$3 x+2 y-1=0$
To find: To determine for what value of k the system of equation has no solution
We know that the system of equations
$a_{1} x+b_{1} y=c_{1}$
$a_{2} x+b_{2} y=c_{2}$
For no solution
$\frac{a_{1}}{a_{2}}=\frac{b_{1}}{b_{2}} \neq \frac{c_{1}}{c_{2}}$
Here,
$\frac{2}{3}=\frac{-k}{2} \neq \frac{-3}{1}$
$\frac{2}{3}=\frac{-k}{2}$
$k=\frac{-4}{3}$
Hence for $k=\frac{-4}{3}$ the system of equation has no solution.