Question

The L-shape ABCDF is the image of the L-shape ABCDEF after which of the following resizings?

• A. Scale factor 3 with central point (-3, -3)
• B. Scale factor 3 with central point (-1, -1)
• C. Scale factor 1/3 with central point (0, 0)
• D. Scale factor 3 with central point (0, 0)

Answer 1

The correct option is D Scale factor 3 with central point (0, 0)

Join A to A, B to B etc. Extend these lines. Where they intersect gives the central point of the resizing, which is the origin (0, 0).
To find the scale factor of the resizing, divide one of the lengths of ABCDF by the equivalent length of ABCDEF e.g. AB/AB = 6/2 = 3, so the scale factor is 3