Question

9. For what value of k, x = 2 and y = -1 is a
solution of x + 3y - k = 0.​

Answer 1

Answer:

As , X=2 and y= -1

so,

put the values in the given equation

2 + 3(-1) -k = 0

2 - 3 - k = 0

-1 - k =0

-k = 1

k = -1

so the value of ' k ' is -1