Find the value of k so that x = −1 and y = −1 is solution of the linear equation 9kx + 12ky = 63 Share with your friends Share 2 Abhishek Jha answered this Dear Student, The given equation is 9kx+12ky=63Since, x=-1 and y=-1 are solutions of the given equation, so we have;9k×-1+12k×-1=63⇒-9k-12k=63⇒-21k=63⇒k=63-21=-3Therefore value of k is -3. Regards 1 View Full Answer