1) Posted in video

2) Show that the points (3,2), (5,1), and (6,8) are vertices of a right triangle.

3) Find the distance between the following points:

a. (1,4), (8,4)

b. (-3,-1), (2,-1)

c. (6.2, 5.4), (-3.7, 1.8)

4) A circle has a center at (4,6) and a point at (-2, 1). Write the equation for this circle.