STATISTICS.
The discrete random variable X has the probabilities:
X -2 0 2 4
P(X=x) a b a c
E(X)=2
1. Show that c=0 ,5
2. If Var(X)= 5,6 find the a and b.
Thank you.

idk but i found this "the graph of y = f(x-2) is the graph of y = f(x) translated two units rightward.  

so, since the point (9,2) lies on the graph of y = f(x), the point (11,2) lies on the graph of y = f(x-2)."

step-by-step explanation:

link is