Graphing Activity

This is the graph of an arbitrary function g(x). You may input another function in the empty box and compare the graphs obtained.You may consider the following functions:

g(x+1) ; g(x+3) ; g(x-1) ; g(x-4)
g(x)+1 ; g(x)+3 ; g(x)-1 ; g(x)-4
2g(x) ; 3g(x) ; 0.5g(x) ; -g(x)

Can you estimate the value of g(2) and g(6) from the graph?