Answer:
a) 9 km
b) 18 km
c) She runs at a constant speed of 9 km/h
Step-by-step explanation:
Answer: (3,-2)
Step-by-step explanation:


new system:

add.

plug in -2 for y

system:

You just times it. (if you have a more question pm me). thank you
5/0 UNDEFINED... The answer is a vertical line.