You can put this solution on YOUR website! y-intercept is -1
y=3x-1
if y=0 then
0=3x-1
1=3x
1/3=x this is x intercept
so plot
either (,)(,)
or (,)(,)
the second one shows first point at y-intercept and then uses slope going up 3 and to the right 1
draw your line your graph is made