# The vector v has initial point P and terminal point Q. How do you write v in the form ai + bj, that is, find its position vector given P = (5, 4); Q = (7, 8)?

Jan 4, 2016

Find a and b by subtracting the x and y values for the terminal point minus the initial point ...

#### Explanation:

$a = 7 - 5 = 2$

$b = 8 - 4 = 4$

$v = 2 i + 4 j$

hope that helped