If $x = -1, y = 2$ is a solution of the equation $3x + 4y =k$. Find the value of $k$.

Given:

$x = -1, y = 2$ is a solution of the equation $3x + 4y =k$.
To do:

We have to find the value of $k$.
Solution:

If $(x, y)$ is a solution of the equation $ax+by+c =0$, then it satisfies the given equation.

Therefore,

$3(-1)+4(2)=k$

$k=-3+8$

$k=5$

The value of $x$ is $5$.

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

34 Views

Kickstart Your Career

Get certified by completing the course

Get Started