Question 1056424
{{{4y-x=20}}}  or  {{{y=(1/4)x+5}}};
Their slopes are  {{{1/4}}}, and {{{1/4}}}.


Use point-slope equation form for a line.
Variable point  (x,y) and known point  (h,k) would have a line, if slope m,
 of  {{{y-k=m(x-h)}}}.



PARALLEL
{{{y+3=(1/4)(x-2)}}}


PERPENDICULAR
{{{y+3=-4(x-2)}}}