Question 669672
Perpendicular lines have negative inverse slopes.
...
Using 3x+4y+5=0
4y = -3x - 5
{{{y = (-3/4)x - 5/4}}}
...
slope of that line is {{{-3/4}}}
...
slope of the perpendicular line is {{{highlight_green(4/3)}}}
.....................
Delighted to help.
-Reading Boosters
Wanting for others what we want for ourselves.
www.MyHomeworkAnswers.com