How do you find the slope of a line perpendicular to another

- How do you find the slope of a line perpendicular to another line
- Find the equation of the line perpendicular to and passing through
- How to find equation of a line that passes through two points
- Find the equation of the line perpendicular to 3x−4y=12 and passing through (6 1)
- Find the equation of the line perpendicular to 2x+3y-6=0 and passing through (-1 1)