Question

Find $k$ if $x=2$,$y=-1$ is a solution of $2x+3y=k$ .

Answer 1

Finding the value of $k$

Given that $x=2$ and $y=-1$ is the solution of the equation $2x+3y=k$

substituting there values in the equation we get ,

$2\times 2+3\times \left(-1\right)=k$

$\Rightarrow 4-3=k$

$\Rightarrow k=1$

Hence the value of $k$ is $1$.