Answer
The answer is -10
Explanation
As the given equation is
[tex]kx - 4y - k = 0[/tex]
Putting the value of x as -1 and y as 5
[tex]k (-1) - 4 (5) - k = 0[/tex]
[tex]-k -20 - k = 0[/tex]
[tex]-2k -20 = 0[/tex]
[tex]K = -10[/tex]
So the value of k is 10
