Answer:
8. Perpendicular
Step-by-step explanation:
Perpendicular lines form a 90 degrees angle
3) 2, 3, 4, 5
4) $10
5) B
-2m -1
(3m+5)-(6+5m)
Distribute the minus sign
(3m+5)-6-5m
Combine like terms
3m -5m +5 -6