Triangle abc has vertices at (2,2), (4,3), and (6,1).
using triangle abc as the pre-image and origin as the center of dilation, what are the coordinates of a dilation of these vertices that uses a scale factor of 0.5?

a. (10,10)(20,15)(30,5)
b. (-1,-,-,-0.5)
c. (1,1)(1.5,2)(0.5,3)
d. (1,1)(2,1.5)(3,0.5)