Answer:
1.
2.
Step-by-step explanation:
Solving (1):
1a) This has already been answered in the attachment, and the selected option is correct.
i.e. Midpoint (M) is:
1b) Midpoint of (-2,-1) and (0,9)
This implies that:
So:
2a) This has already been answered in the attachment, and the selected option is correct.
i.e. Distance (D) is:
1b) Midpoint of (2,7) and (8,-1)
This implies that:
So: