To rotate a point \( C(x, y) \) 270° clockwise around the origin, we can use the following transformation rule:
For a rotation of 270° clockwise, the new coordinates \( (x', y') \) can be calculated as: \[ (x', y') = (y, -x) \]
Given \( C(10, 3) \), we can apply the transformation:
- \( x = 10 \)
- \( y = 3 \)
Now we will substitute these values into the transformation:
\[ x' = 3 \] \[ y' = -10 \]
Thus, the coordinates of point \( C' \) after the rotation are:
\[ C'(3, -10) \]
So, the answer is \( (3, -10) \).