Question

check my answer!!!!!
What is an expression for x involving r and s?

Answer 1

This is definitely an odd problem, but I think I know how to tackle it.

So if vector x was pointed in the opposite direction that it is currently pointing, then the answer would be r + (-s)

but because x is flipped going the other way, we multiply everything by -1 to get -r + s

So it looks like you are correct

Answer 2

thanks so much @jim_thompson5910

Answer 3

no problem