Question

Find the value of k so that (-1,5) lies on kx - 4y -k=0

Answer 1

The answer is -10

Step-by-step explanation

As the given equation is

`kx - 4y - k = 0`

Putting the value of x as -1 and y as 5

`k (-1) - 4 (5) - k = 0`

`-k -20 - k = 0`

`-2k -20 = 0`

`K = -10`

So the value of k is 10