Question

For what value of k, the pair of linear equations 2x + ky =1 , x – 3y = –3
has
unique solution.pls tell

Answer 1

Step-by-step explanation:

2x+ky=1, x-3y=-3

2x+ky-1=0

x-3y+3=0

unique solution means

a1/a2 not equal to b1/b2

a1=2, a2=1 and b1=k, b2=-3

2/1 not equal to k/-3

cross multiplying it we get

k not equal to -6

Hence k can be any number rather than -6.