Answer:
7u = <-56, -63>
Step-by-step explanation:
It is about a linear algebra problem, specifically a scalar multiplication one.
The procedure to solve it consists in multiplying the scalar number (in this case, the 7 number) by each of the components of the vector (in this case, the -8 and -9 numbers ).
\(7u = 7<-8, -9>\)
\(7u = <7\times (-8), 7\times (-9)>\)
\(7u = <-56, -63>\)
Thus, \(7u = <-56, -63>\)
