Question 1126443
Compare the slopes
(11)
{{{ ( 10/3 - 0 ) / ( 0 - 10/9 ) = ( 10/3 )*( -9/10 ) }}}
{{{ ( 10/3 )*( -9/10 ) = -3 }}}
(12)
{{{ ( 35/6 - 0 ) / ( 0 - 35/18 ) = ( 35/6 )*( -18/35 ) }}}
{{{ ( 35/6 )*( -18/35 ) = -3 }}}
They have the same slope, so the lines are parallel