Answer:
1:500
Step-by-step explanation:
Since it has already given you the conversion factor, the ratio is 1:500, where every 1 cm is 500 km.
Answer: The system consists of parallel lines
Step-by-step explanation:
Given system of lines :

Substitute
in
, we get
, which is not true.
That means , system has no solution.
i.e. they are representing parallel lines. [Parallel lines do not intersect and hence they do not have solution.]
Answer:
Find the function of two points first. Then check whether the third point is on it