M is the midpoint of Line segment CF for the points C(3,4) and F(9,8).

MF = √13 units

Explanation:

1- We get the distance between C and F:

The distance formula is as follows:

distance =

We have:

point C (3,4) and point F (9,8)

This means that:

CF =

CF = 2√13 units

2- We get MF:

We know that M is the midpoint of CF, this means that:

CM = MF

and

CM + MF = CF

Therefore:

MF would be equal to half CF

MF = 0.5 * 2√13 = √13 units

a is the answer i believe.

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)