Question 1128682
{{{ x + 2y = 7 }}}
{{{ 2y = -x + 7 }}}
{{{ y = (-1/2)*x + 7/2 }}}
Here's the plot:
Note the points ( 0, 7/2 ) and ( 7, 0 )
{{{ graph( 400, 400, -10, 10, -10, 10, (-1/2)*x + 7/2 ) }}}