Question

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

Answer 1

if u = <-5,1>

then

9u = 9*<-5, 1> = <9*(-5), 9*1> = <-45, 9>

so

9u = <-45, 9>

Answer 2

using these same basic steps, what is -6v ?

Answer 3

-35, 24?

Answer 4

-6 times 7 is -42, but you got the second piece correct

Answer 5

oh ya thats what i meant lol sorry

Answer 6

9u - 6v

9u + ( -6v )

<-45, 9> + <-42, 24>

<-45 + (-42), 9 + 24>

<-83, 33>

Answer 7

oops meant to say <-87, 33> for the last step

Answer 8

thanks so much!!

Answer 9

yw