Question 23919
I would first convert the given equation to {{{y=mx+b}}} form.
m being the slope 
b being the y-intercept


{{{6x+3y=9}}}
Isolate the y
{{{3y=-6x+9}}}
Divide 3 by both sides to get y alone
{{{y=-2x+3}}}
Graph


{{{graph(500,500,-10,10,-10,10,-2x+3)}}}
Hope this helps!