A plane figure S is to be translated by I = [ -~ ] and then the resulting figure translated by v = [ _ ~]. (a) Determine the 3 x 3 matrix M in homogeneous form that will perfonl1this composition of translations. (b) Can the transfonnations be reversed? That is. is it possible to detennine a matrix P that will return the image from part (a) to the original position? If it is possible, determine the matrix P. Explain your construction of P

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