Question

The pair of linear equation kx + 2y=5 and 3x+y+1=0 has unique solution if.​

Answer 1

Step-by-step explanation:

this equation has unique solution if:

$\frac{a1}{a2} \: is \: not \: equal \: to \: \frac{b1}{b2}$

so,

$\frac{k}{3} \: not \: = \frac{2}{1}$

after cross multiplying,

k will not be equal to 6...

so any value of k except 6 will give an unique solution