Answer:
True, they are in a proportional relationship
Explanation:
Well we can make a graph of what the points are
The first point there is, is (0,5)
so (0,5)
The second point is (1,10)
(0,5)
(1,10)
They are porportional so far
Third point is (2,15)
You see the pattern?
If there is a pattern, its proportional
the pattern is for every 1 X, there is 5 y
Except for the first one, there is a starting value but it still makes sense
So true