Question

If a=2i+4j, b=2i-5j.What is the vector equation of line AB?.

Answer 1

9j

Explanation:

vector AB means going to B from A.

= pos. final - pos. initial

= pos.B - pos.A

= (2i + 4j) - (2i - 5j)

= 2i + 4j - 2i + 5j

= 9j