Question

if X = 4 and Y = 3 is solution of the linear equation 2 x - k y = 23 then find the value of k​

Answer 1

2x -ky=23

put the values of x and y

2 x 4 - k x 3 = 23

- k x 3 = 23 - 8

-k x 3 = 15

- k = 15 / 3

k = -5