Question

The graph for the linear equation given below

$x+3=0$

Answer 1

$x+3=0=>x=-3$
In the linear equation $x=-3$, there is no term for $y$. This
means, that $y$ can take any value. Points lying on the line $x=-3$
can be $(-3,0),(-3,5)$ or $(-3,-6)$. Plotting these points on
the graph paper and joining them, we get the graph for $x=-3$.