Question

Find the value of k, so that x=1, y=-1 is a solution of the linear equation 9kx±12ky=42​

Answer 1

Answer:

x=1, y=-1

9k(1)+12k(-1)=42

9k-12k=42

-3k=42

k=42/-3

k= -14

Answer 2

Answer:

The value of k will be -14 or 2 according to + and - conditions