Question

find the value of k, if x=2,y=1 is a solution of the equation 2x+3y=k

Answer 1

Answer:

$The \: value \: of \: k = 7$

Step-by-step explanation:

$Given , \\linear \: equation \: in \\\: two \:variables \: x \: and\: y \: is \\\: 2x+3y=k$

$Substitute \: x=2 ,y=1 \: in \: the \: equation ,\\ we \: get$

$2\times 2 + 3\times 1 = k$

$\implies 4+3=k$

$\implies 7 = k$

Therefore,

$The \: value \: of \: k = 7$

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Answer 2

Answer:

=> The value of k = 7

Step-by-step explanation:

Given that:-

$2x+ 3y = k$

If $x = 2, y = 1$

As we have to determine the value of k,

For that, we have to plug the value of x as 2 and y as 1 in the equation:

=> 2 ( 2 ) + 3 ( 1 ) = k

Multiplying the numbers, we get

=> 4 + 3 = k

Now, by adding the numbers we get

=> 7 = k

Hence the value of k is 7.