Consider the transformation necessary to scale a 2-dimensional object centred at (-1, 3) by 4 in the y-direction. The resulting object is still to be centred at (-1, 3). i. List the sequence of steps necessary to accomplish this transformation. 11. Write the individual transformation matrices needed to implement each of the steps in (a) above. Hint: Use homogeneous coordinates. Compute the composite transformation matrix which will accomplish the entire transformation. 111