Question 1085813

{{{16x-15y=9}}}......eq.1
{{{16x-9=15y}}}
{{{y=(16/15)x-9/15}}}->slope is {{{16/15}}}

{{{16x+20y=-6}}}......eq.2
{{{20y=-16x-6}}}
{{{y=-(16/20)x-6/20}}}->slope is {{{-16/20}}}

lines are neither parallel nor perpendicular because slopes are neither same nor negative reciprocal to each other