Answer
Please see the graph.
Work Step by Step
Let $x=0$
$x-2y=6$
$0-2y=6$
$-2y=6$
$-2y/-2=6/-2$
$y=-3$
Let $y=0$
$x-2y=6$
$x-0=6$
$x=6$
Let $y=-1$
$x-2y=6$
$x-2*-1=6$
$x+2=6$
$x=4$
$(0,-3), (6,0),$ and $(4,-1)$ are on the line