What is the area of a rectangle with vertices at (-3,-1), (1,3), (3,1) and (-1,-3)?

With #! i’ve tried to figure it out but i can’t.

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).