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:

the answer is 510

step-by-step explanation:

15 • 13 = 195

15 • 12 = 180

15 • 5 = 75

12 • 5 = 60

195 + 180 = 375

375 + 75 = 450

450 + 60 = 510