Sam started his morning walk from the location indicated by the point below. He walked 5 units south and met his friend Joshua.
To indicate Sam's starting point and his movement towards the south, we can use a coordinate plane. Let's assume the point where Sam started his morning walk is (0,0).
Starting point: (0,0)
Sam walked 5 units south. Since he moved in the south direction, the y-coordinate of his position decreased by 5 units.
Position after walking south: (0, -5)
Here is the visual representation on a coordinate plane:
↑
|
|
| Sam's
| position
|
|
|--------------------→
(0,0)