Hello, could someone please help me answer this math work? Thank you in advance.

1. Given the following points: Y(6, -1) and O(-3, 5), find: a. Length of YO b. Midpoint of YO c. Slope of YO d. Which point is the closest to the origin? 2. Given the circle x2 + y2 = 16, state its center and radius: 3 . The point (6,-3) is on a circle that has its centre at (0, 0). Find the equation of the circle. 4 . The point A (4, b) lies on the circle defined by x2 + y2 = 25. Find the possible value(s) of b. 5. If the midpoint of a line segment is at M(-2, -1) and one endpoint is at A(1, 4). Find the coordinates of the other endpoint, P