What key feature on a graph are you finding when you find the solution

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

Multiply. write your answer in simplest form. 3/8 x 5/7