Answer:
The given table is 
 
Quantity(x) Price(y) 
 
 1 2.00 
 
 2 3.50 
 
 3 5.00 
 
 4 6.50 
 
 5 8.00 
 
 6 9.00 
 
It means the points on the graph are (1,2), (2,3.50), (3,5), (4,6.50), (5,8) and (6,9). 
 
The graph 1 represents all the above mentioned point, therefore option 1 is correct. 
 
According to the graph 2, at quantity 6 the price of flower is 12, which is not correct. Therefore option 2 is incorrect. 
 
The quantity of flower is always a whole number. So the graph is defined on the whole numbers only. It means the graph is a scatter plot instead of a curve of a straight line. 
 
Therefore the option 3 and 4 are incorrect.
Explanation: