M = (1,4)
N = (5,2)
For M, you simply move to 1 on the x axis abs for 4 you move on the y axis. Same does for N, for 5 you move on the x axis and for 2 you move on the y axis.
950 g * 1 cm^3/10.5g = 950/10.5 cm^3 = 90.476 cm^3
A' = (-2, 1)
B' = (1, 0)
C' = (-1, 0)
For this case we have the following expression:

We clear the value of the variable "g", for this:
We multiply by 4 on both sides of the equation:

We divide by 3 on both sides of the equation:

We simplify:

Answer:
