Question

For what value of k system of linear equation 5x +4y =2 and 8x + ky =37 have unique solution

Answer 1

a1/a2 should not be equal to b1/b2

So

a1=5 a2=8

b1=4 b2=I

So 5/8 =4/k

Solving this

5k=32

k=32/5

So

Any value can satisfy this equation except k=32/5