Hi, I'm not sure how to do this problem. A triangle with vertices (2,9),(-5,1), and (1,-4) is dilated by a scale factor of 4. Which matrix expression represents the transformation? Do I multiply the vertices by 4? Here's the possible answers by the way:
A. 4x[2 -5 1]
[9 1 -4]
B. 4x [9 1 -4]
[2 -5 1]
c. 4x [2 9]
[-5 1]
[ 1 4]
D. 4x [ 9 2]
[ 1 -5]
[ 4 1]

Question

Hi, I'm not sure how to do this problem. A triangle with vertices (2,9),(-5,1), and (1,-4) is dilated by a scale factor of 4. Which matrix expression represents the transformation?  Do I multiply the vertices by 4? Here's the possible answers by the way:
A. 4x[2   -5    1]
        [9     1   -4]
B. 4x [9   1   -4]
         [2  -5    1]
c.  4x [2      9]
          [-5    1]
          [ 1     4]
D. 4x [ 9    2]
         [  1   -5]
         [  4    1]

anonymous · Answer

may be D