Question 314399
A parallel line would have the same left hand side, different right hand side.
Use the point to determine the right hand side.
{{{x+2y=3+2(5)=3+10=13}}}
{{{x+2y=13}}}
{{{2y=-x+13}}}
{{{highlight(y=-(1/2)x+13/2)}}}

{{{ drawing( 300, 300, -2, 10, -2, 10, grid(1),circle(2,5,0.3),graph( 300, 300, -2, 10, -2, 10, -(1/2)x+13/2
, -(1/2)x+12/2)) }}}