How do you find the slope that is perpendicular to the line #-5x-3y+8=0#?
The slope of one line and the slope of a line perpendicular to the first line are negative inverses of each other.
If Line1 has slope
To find the slope of your line
So, your line has slope
The slope of a line that is perpendicular to your line above will be the negative inverse, that is:
(It's the lines that are perpendicular to each other, not the slopes. The slopes are negative inverses.)