Answer:
4. EF
5. D, E, F
Explanation:
4.
Since we want endpoint as E, our first letter in naming the line will be E. Now since we also want it to pass through point F, we can call the line, Line EF or just EF.
5.
Since the definition of collinear is "on the same line" then the only 3 points on the same line in the diagram would be points D, E, and F.