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