Final answer:
There are 3,024 possible quadrilaterals using the given dots as vertices.
Step-by-step explanation:
To determine the number of possible quadrilaterals using the given dots as vertices, we can consider the choices for each vertex.
Starting with the first vertex, there are 9 dots to choose from. Once the first vertex is chosen, there are 8 dots remaining for the second vertex. For the third vertex, there are 7 dots left, and for the fourth vertex, there are 6 dots remaining.
Therefore, the number of possible quadrilaterals is 9 * 8 * 7 * 6 = 3,024.