How do you find the parallel and perpendicular slope of 3x-5y=-8?
Change the equation of the line into standard form
The slope of this line is
Parallel lines have the same slope, so any line parallel to this one will have a a slope
If lines are perpendicular, their slopes are negative reciprocals of each other and we can show:
To find the negative reciprocal, turn the slop upside down and change the sign.