math
posted by Mario .
suppose you use the rule (3x+1,3y4) to transform the original figure into a new figure. How would the angles of the new figure compare with the angles of the original? Please, I need help ASAP

The transformation is isotropic, i.e. expands/contracts in the same proportion in both directions, evidenced by the common factor 3 in both x and y.
Thus the image retains the same shape as the original, in other words, angles are preserved.
The +1 and 4 are translations which do not change the shape nor the size of the image.