The figure above shows the graph of the mystery function $y = f(x)$.
In the figure below, match the colors of the graphs in this figure with the functions given. Enter y for yellow, b for blue, r red,and g for green, as appropriate.

$y = f(x) +2$
$y = f(x)-2$
$y = f(x+2)$
$y = f(x-2)$