THIS USER ASKED ๐Ÿ‘‡

Let u = < -5, 1> , v = < 7, -4> . find 9u-6v. a. < 18, 18> b. < -87, 33> c. < -36, -18> d. < -3, -15>

THIS IS THE BEST ANSWER ๐Ÿ‘‡

b. <-87,33>

Explanation:
We are given:
u = <-5,1>
v = <7, -4>

We want to get 9u-6v
We will first calculate the 9u and 6v separately and then subtract the 6v from the 9u as follows:
9u = 9 * <- 5,1> = <9 * -5, 9 * 1> = <-45,9>
6v = 6 * <7, -4> = <6 * 7, 6 * -4> = <42, -24>
Finally:
9u – 6v = <-45,9> – <42, -24> = <-45-42, 9--24> = <-87,33>

I hope this helps ๐Ÿ™‚