How Does Electric Field Affect Potential Change Between Two Points?

[nightwalkervamp]

I would be very grateful if you could help point me in the right direction. Thanks[


b]1. Homework Statement [/b]
If a uniform field E=5i+4j V/m what would be the change in potential from A(-1m, -1m) to B at (1m,2m).
Thanks.

Homework Equations

The Attempt at a Solution

Not sure whether to do the difference between them, or use some trig.

 

[chaoseverlasting]

Difference.