Help it is for my final

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Which of the following points is collinear with (-2,1) and (0,3)

Complete the equation of the live through (-1,6) (7,-2)