Question

Let u = <-5, 1>, v = <7, -4>. Find 9u - 6v.

Answer 1

<18, 18>

<-87, 33>

<-36, -18>

<-3, -15>

Answer 2

@AnswerMyQuestions help? @mathmath333

Answer 3

9u - 6v
= 9*<-5, 1> - 6*<7, -4>
= <-45, 9> + <-42, 24>
=<-87,33>

Answer 4

@perl can you check one for me
Let u = <-7, -2>. Find 4u.
I got <-28, -8>.
Is that right?