Answer:
< 15, - 21 >
Explanation:
Multiply each of the components of the vectors by the scalar quantity, then add corresponding components of each vector.
9u + 2v
= 9 < 3, - 1 > + 2 < - 6, - 6 >
= < 27, - 9 > + < - 12, - 12 >
= < 27 - 12, - 9 - 12 >
= < 15, - 21 >