Question

Find the value of k if x = 2 and y = - 1 is the solution of the equation 2x + ky = 5​

Answer 1

Answer:

Similarly, we will substitute x=2, y=1, in the given equation to find the value of k. Complete step-by-step answer: We have been given the equation \[2x+3y=k\] and x=2, y=1, is a solution of the equation. Hence, the value of k is equal to 7.

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Answer 2

Answer:

k = -1

Step-by-step explanation:

substituting value of x and y in given equation

2(2) +k(-1) = 5

4 -k = 5

4-5 = k

-1 = k