Question 733698
The slope of a line is {{{m=-4}}} and its {{{y-intercept}}} is ({{{0}}}, {{{4}}}). 
so, the equation of this line is:

{{{y=mx+b}}}....plug in given values {{{m=-4}}}and {{{y=4}}}

{{{y=-4x+4}}}.......the first line



 the equation of the line that is {{{perpendicular}}} to the first line and passes through ({{{-8}}}, {{{2}}}) will be:

*[invoke equation_parallel_or_perpendicular "perpendicular", -4, 4, -8, 2]