Which explains whether or not the graph represents a direct variation? 15
5
4
3
2.
1
-5 -4 -3 -2 -1
1
2
3
4
5
х
NI

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.