Answer:
The graph is a straight line that has a slope of 6.
Explanation:
Remember that the slope represents the constant ratio of variation. In other words, is the number that variates the relation between variable.
So, the given table represents a proportional relationship, because you can observe that x-variable changes one unit, while y-variable changes 6 units. In other words, while y-variable changes 6 units, x-variable changes 1 unit, that's a proportional relationship, and its ratio is

This means the proportional relationship has a slope of 6.
Therefore, the right answer is the first choice.
Remember that proportional relationships are represented by a straight line, where the slope is the constant of variation.