1.10.4 Test: Coordinate Geometry HELP PLEASE

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:

b.-4 units

all you   do is count how many times you move