Question

if equation Kx+4y= 10 and 2x-2y=2 have one solution then value of k is ?​

Answer 1

Since these equation have one unique solution

There fore the lines will intersect each other

hence a1/a2 will not be equal to b1/b2

K/ 2 not equal to 4/ -2

-2k not equal to 8

k not equal to 8/-2

k not equal to -4