Question

determine the value of k for which the given pair of linear equation has a unique solution:2x-3y=1;kx+5y=7

Answer 1

situation for unique solution is----
a1/a2 not= b1/b2
so
2/k not= -3/5
= 2×5 not= -3k
= 10 not= -3k
k = -3/10

Answer 2

10...........................................