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:

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm