Answer:
Step-by-step explanation:
For Case -1



Put the value of
in equation
we get




and thus 

Case-2


Now multiply 





and 
Answer:
B. The slopes of the graphs are the same and the y-intercepts of the graphs are different
Step-by-step explanation:
The lines will also be parallel
Answer:
A) -68
Step-by-step explanation:
If you counted up until they were 100 kilometers apart it would look like this:
Mr. A - 100, 200, 300, 400, 500
Ms. R - 80, 160, 240, 320, 400
They were 100 kilometers apart in 5 hours.