Question 115901
first find the equation of the line through points (0,5) and (-3,-4)



*[invoke find_equation_of_line 0, 5, -3, -4]

then find slope of any line perpendicular this line:



perpendicular lines have slopes as negative reciprocals

Since a slope for this line is {{{m[1]= 3}}}, slope for the line perpendicular to this line will be {{{m[2] = -1/3}}}

example line is:

 {{{y=-(1/3)x}}}

graph both together:

*[invoke solve_by_graphing -3, 1, 5, 1/3, 1, 0]