Question

Find the value of k, if (1, -1) is a solution of the equation 3x-ky = 8.

Answer 1

Given that,

(1,-1) is a solution of the equation 3x-ky = 8.

To find,

The value of k.

Solution,

As (1,-1) is a solution of the given equation. It means the point will satisfy the equation.

Putting x = 1 and y = -1 in the given equation :

3x-ky = 8

3(1)-k(-1)=8

3+k=8

k=8-3

k=5

So, the value of k is 5.