Exercise: 1. Find the transformation matrix of the composition of dilation with scale factor 1 and reflection about a line u = [uj uz uz]. 2. Show that the transformation matrix of reflection about the line x + y = 0 is the dilation matrix with scaling factor 1 = -1. (Use 1.) 3. Find the transformation matrix for a dilation about a point B(a,b). 4. Show that the inverse of dilation with scale factor 2 is a dilation with scale factor Exercise: 1. Find the transformation matrix of the composition of dilation with scale factor 1 and reflection about a line u = [uj uz uz]. 2. Show that the transformation matrix of reflection about the line x + y = 0 is the dilation matrix with scaling factor 1 = -1. (Use 1.) 3. Find the transformation matrix for a dilation about a point B(a,b). 4. Show that the inverse of dilation with scale factor 2 is a dilation with scale factor