Orange line
Rise : 2
Run : 3
Slope: 2/3
I think it should perpendicular because these lines are intersecting at the start point.
Answer: I don't think there is a repeating sign, at least on the calculator I use, you may just have to write the number out.
Step-by-step explanation:
The slope is 3, so if x changes by 2, y changes by 6.