Final answer:
The pattern suggests starting with x-coordinate 1 and incrementing by 1 for each point, and starting with y-coordinate 3.5 and adding 0.5 for each point. Thus, the coordinates are (1, 3.5), (2, 4), (3, 4.5), and (4, 5).
Step-by-step explanation:
The question involves identifying a pattern in a sequence of coordinate pairs and completing the sequence accordingly.
Let's start by establishing the given pattern for the x-coordinates: they begin at 1 and increase by 1 with each subsequent coordinate. Therefore, the x-coordinates are simply 1, 2, 3, and 4.
The y-coordinates seem less straightforward, but we are given a hint that they 'start with three and a half five finish the pattern.' Assuming there was a typographical error, and interpreting this as starting with 3.5 and adding 0.5 for each subsequent y-coordinate, the y-coordinates would then be 3.5, 4, 4.5, and 5. Hence, the complete coordinates should be (1, 3.5), (2, 4), (3, 4.5), and (4, 5).