Question

find the value of k if( 2,-1) is a solution of the equation x+3y-k=0​

Answer 1

Answer:

k=7

Step-by-step explanation:

If x=2, y=1

2x+3y=k

2(2)+3(1)=k

4+3=k

7=k

So, the value of k is 7.

Answer 2

Answer:

k = -1

Step-by-step explanation:

given

x = 2

y = -1

Coming to the solution

2+3(-1)-k = 0

2+(-3)-k = 0

-1-k = 0

-k = 1

k = -1