What kind of transformation results from multiplying the pre-image's matrix of coordinates by a scalar of 9 ?

A. The image is translated 9 units to the right of the pre-image.
B. The image is rotated clockwise 9° from the pre-image.
C. The image is dilated to nine times the size of the pre-image.
D. The image is shrunk until it is 1/9 the size of the pre-image.

Question

What kind of transformation results from multiplying the pre-image's matrix of coordinates by a scalar of 9 ?

A. The image is translated 9 units to the right of the pre-image.
B. The image is rotated clockwise 9° from the pre-image.
C. The image is dilated to nine times the size of the pre-image.
D. The image is shrunk until it is 1/9 the size of the pre-image.

polaris_s0i · Answer

its C,

$$ 9\left( \begin{array}{ccc}
a & b \
c & d \end{array} \right) =
\left( \begin{array}{ccc}
9a & 9b \
9c & 9d \end{array} \right)$$