Question

Find the value of k in the equation 2x+3y=9 and kx-9y=18 will be parallel

Answer 1

Hello Mate

if the lines are parallel

then , a1/a2 = b1/b2  not equal to c1/c2

a1/a2 = 2/k

b1/b2 = 3/9

2/k = 3/9

3k = 18

k = 18/3

k = 6