Answer:
3x
Step-by-step explanation:

Hope you could get an idea from here.
Doubt clarification- use comment section.
(0, 9) represents the y-intercept of the graph.
Since the slope is 1/3, this means that y will rise 1 for every 3 that x runs.
The points that can be used to make a line in this graph are (3, 10) and (6, 11).
Answer:
x + y = 11
10x + 5y = 80
Step-by-step explanation:
What is the context for the question if there is any?