Answer:
CD and DE are perpendicular because their slopes are -1/3 and 3
Step-by-step explanation:
Perpendicular lines will always have the opposite reciprocal.
Answer: Sort a list of couples married in his county into a random order, then ask the first 30 couples on the list.
Step-by-step explanation:
Does it tell you what process to use
Like graphing Substitution or elimination
Sorry :l