Let:
R = (-3,2)
S = (0, - 5)
T = (4,5)
R' = (4,1)
So:
R(x,y)----->T------->R'(x,y)
x1 = -3
x2 = 4
y1 = 2
y2 = 1
(-3,4)------->(x+7,y-1)--------->(-3 + 7, 2 - 1) = (4,1)
Therefore:
4.4m questions
5.6m answers