Question

Find the value(s) of k so that the pair of equations x+2y=5 and 3x+k y = -15 has unique solutions

Answer 1

Step-by-step explanation:

for my convenient let not equal to be( = l

a1/a2 is not equal to b1/b2

1/3 =2/k

k=6

k is not equal to 6

therefore k is any real number except 6