Question

3part

Answer 1

alright, so it's basically asking for a dot product step by step

multiply the x-coordinates together, multiply the y-coordinates together

and write down the two products you get (don't do anything else yet)

Answer 2

6 and 6

Answer 3

be careful with signs, the first product is -6

(4)(-3/2) = -6 not 6

part II: just add -6 and 6 together

part III: is the result 0? if yes, orthogonal, if not, not orthogonal

Answer 4

did this one by myself, can you check it

Answer 5

A+