Question 784337
equation of a line that goes through ({{{-3}}},{{{13}}}) and is perpendicular to 

{{{9x+4y=48}}} ....solve for {{{y}}}

{{{4y=-9x+48}}}

{{{y=-(9/4)x+48/4}}}

{{{y=-(9/4)x+12}}}


*[invoke equation_parallel_or_perpendicular "perpendicular", "-9/4", 12, -3, 13]