Answer: 5/2
Explanation:
Change you equation into y=mx+b form
15x - 6y = 54
-15x -15x
-6y = -15x + 54
/-6 /-6 /-6
y = 5/2x -9
When you want a parallel line, the slopes are going be the same. You slope that you have when you changed it into y=mx+b form is 5/2 so that is your answer.