Which explains whether or not the graph represents a direct variation?
1+1
5
4
3
2
1
1 2
3
4
5 x
ty
The graph has a constant of variation of 3, so it represents a direct variation.
The graph has a slope of 3, so it represents a direct variation.
The graph has a positive slope, so it does not represent a direct variation.
The graph does not begin at the origin, so it does not represent a direct variation.