Answer:
Any line with a slope of -3/5 would be perpendicular to this line.
Explanation:
In order to find this, first solve the current line for y.
3y = 5x - 1
y = 5/3x - 1/3
Now that we have the original slope of 5/3, we can look for the perpendicular slope. Perpendicular slopes are opposite and reciprocal. This means that 5/3 becomes -3/5. So, any line with that slope would be perpendicular.