Question

Tell me the answer fast​

Answer 1

Step-by-step explanation:

2x-ky=3

Given that (2,-1) is a solution of above equation.

x=2;y=-1

Putting value equation.

2(2)-k(-1)=3

4+k=3

k=3-4

k=-1

HERE'S YOUR ANSWER.

MARK AS BRAINLIEST.

Answer 2

Step-by-step explanation:

( 2,-1 )

x = 2 , y = -1

2x - ky = 3

substituting the values of x and y

2(2) - k(-1) = 3

4 - (-k) = 3

4 + k = 3

k = 3-4

k = -1