2. the table shows the total number of segments whose endpoints are chosen from x points, no three of which are collinear.

a. the third point on the table is (4, 6). write a quadratic model of the data. what point would go in the last set of missing boxes in the table? show your work.

b. predict the number of segments that can be drawn using 10 points. show your work.

c. in what real-life situation could this model be useful? give a reason for your answer.

3. determine whether a quadratic model exist for the set of values. if so, write the model. show your work.