Question 361768
When {{{x=0}}},
{{{3x-y=13}}}
{{{0-y=13}}}
{{{y=-13}}}
({{{0}}},{{{-13}}})
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When {{{y=0}}}
{{{3x-y=13}}}
{{{3x-0=13}}}
{{{3x=13}}}
{{{x=13/3}}}
({{{13/3}}},{{{0}}})
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Plot those two points, then connect them with a line.
{{{drawing(300,300,-10,10,-15,5,grid(1),circle(13/3,0,0.44),circle(0,-13,0.44),graph(300,300,-10,10,-15,5,3x-13))}}}