Point A=(1,3,4) and point B=(-2,2,0). Determine AB.

Question

a) (3,1,4)

b) (-3,-1,-4)

c) (-1,5,4)

d) (1,5,4)

I chose answer C.

2. A goes from (2,1) to (4,-1) Determine the components of A.

a) (6,0)
b) (-2,2)
c) (2,-2)
d) (0,6)

Answer 1

I will assume that AB is a vector, then
AB = [-2-1 , 2-3 , 0-4]
= [ -3 , -1 , -4]

which is choice b)

For your second, do it the same way to get c)